Capintec CAPTUS 600 Owner's Manual

CAPTUS® 600

THYROID UPTAKE SYSTEM

OWNER’S MANUAL

Capintec, Inc.

Sales and Marketing

and Customer Support

6 Arrow Road

Ramsey, NJ 07446

Phone (800) ASK-4CRC

Fax [phone]

Capintec, Inc.

Service Center

620 Alpha Drive

Pittsburgh, PA 15238

Phone [phone]

Fax [phone]

Copyright

CAPTUS® is a registered trademark of Capintec, Inc.

ALL RIGHTS RESERVED

Manual Stock No. 9250-0072

Rev. M – November 2007

©

1995 Capintec, Inc.

CAPINTEC, INC. CAPTUS® 600

TABLE OF CONTENTS

PREFACE

SAFETY................................................................................................................................1-1

SYMBOL DEFINITIONS....................................................................................................1-1

WARNING AND CAUTION LABELS.................................................................................1-2

CAUTIONS AND NOTES..................................................................................................1-5

GENERAL SAFETY TIPS..................................................................................................1-6

FUNCTIONAL & TECHNICAL DESCRIPTION....................................................................2-1

GENERAL..........................................................................................................................2-1

TECHNICAL DESCRIPTION.............................................................................................2-1

Detector .........................................................................................................................2-2

Multichannel Analyzer....................................................................................................2-2

TECHNICAL SPECIFICATIONS .......................................................................................2-2

Thyroid Uptake Stand....................................................................................................2-2

System Power Requirements ........................................................................................2-3

Environment Requirements ...........................................................................................2-3

Operational................................................................................................................2-3

Storage......................................................................................................................2-3

Isolation Transformer.....................................................................................................2-4

Printer ............................................................................................................................2-4

Readout Unit..................................................................................................................2-4

Nuclear Data..................................................................................................................2-4

Calibration Source Data.................................................................................................2-5

Multichannel Pulse Height Analyzer ..............................................................................2-5

Diagnostics and Test .....................................................................................................2-5

Utilities ...........................................................................................................................2-5

Display...........................................................................................................................2-5

Two Separate Inputs......................................................................................................2-5

Probe Detector...............................................................................................................2-6

Well Detector – Optional................................................................................................2-6

Regulatory Listings ........................................................................................................2-6

EMC...........................................................................................................................2-6

Electrical....................................................................................................................2-6

ETL Listed .................................................................................................................2-6

FUNCTIONAL DESCRIPTION..........................................................................................2-7

Thyroid Uptake...............................................................................................................2-7

Thyroid Uptake Nuclides................................................................................................2-7

Pre-Dose Measurement.................................................................................................2-7

Thyroid Uptake Protocols...............................................................................................2-7

One Capsule Method.................................................................................................2-8

Standard Capsule Method.........................................................................................2-8

Two Capsule Method.................................................................................................2-8

Multi-Capsules...........................................................................................................2-9

Wipe Tests.....................................................................................................................2-9

November 07 TABLE OF CONTENTS TOC-i

CAPINTEC, INC. CAPTUS® 600

Lab Tests – Urine......................................................................................................2-9

Lab Tests – Blood...................................................................................................2-10

Staff Bioassay..............................................................................................................2-10

GENERAL OPERATING OVERVIEW..................................................................................3-1

TURN ON SYSTEM ..........................................................................................................3-1

LOG-ON PASSWORD ......................................................................................................3-1

SYSTEM FUNCTIONS......................................................................................................3-2

PROBE SCREEN..............................................................................................................3-3

WELL SCREEN.................................................................................................................3-3

HOME Key ........................................................................................................................3-4

Changing from PROBE to WELL Functions......................................................................3-4

Changing from WELL to PROBE Functions......................................................................3-4

CONTRAST .......................................................................................................................3-4

SCREEN DIMMER............................................................................................................3-4

FUNCTION Keys...............................................................................................................3-5

PRINT Key ........................................................................................................................3-5

UTIL Key ...........................................................................................................................3-5

KEYBOARD ......................................................................................................................3-6

BSP Key............................................................................................................................3-6

PROMPT...........................................................................................................................3-6

ARROW Keys....................................................................................................................3-6

ALPHANUMERIC ENTRIES .............................................................................................3-7

Entries with Number and Letters ...................................................................................3-7

SPACE Key ...................................................................................................................3-7

Decimal Point.................................................................................................................3-7

BLANK ENTRIES..............................................................................................................3-8

INVALID VALUES .............................................................................................................3-8

ENTERING DATE and TIME.............................................................................................3-8

SETUP PASSWORD ........................................................................................................3-8

YES or NO Answers..........................................................................................................3-9

COUNTING METHODS ....................................................................................................3-9

MEASUREMENT ERRORS............................................................................................3-10

HIGH VOLTAGE ADJUSTMENT ....................................................................................3-10

OFFSET VOLTAGE ADJUSTMENT...............................................................................3-10

DISPLAY CONTRAST ADJUSTMENT ...........................................................................3-11

DATA ENTRY INPUT LIMITS .........................................................................................3-11

Thyroid Uptake Protocols ............................................................................................3-11

Thyroid Uptake Measurements....................................................................................3-11

Cs137 Standard...........................................................................................................3-11

Bioassay Protocol........................................................................................................3-12

Additional Nuclide........................................................................................................3-12

Blood Volume ..............................................................................................................3-12

RBC Survival Measurement ........................................................................................3-12

Patient Demographics .................................................................................................3-12

Wipe ............................................................................................................................3-12

Description..............................................................................................................3-12

Background Counting..............................................................................................3-12

Generic Conversion Factors ...................................................................................3-12

Trigger Levels .........................................................................................................3-13

TOC-ii TABLE OF CONTENTS November 07

CAPINTEC, INC. CAPTUS® 600

Staff Data.....................................................................................................................3-13

SYSTEM SETUP...................................................................................................................4-1

INSTALLATION.................................................................................................................4-1

ENVIRONMENT REQUIREMENTS..................................................................................4-1

Operational ....................................................................................................................4-1

Storage ..........................................................................................................................4-1

POWER REQUIREMENTS...............................................................................................4-2

TURN ON PROCEDURE ..................................................................................................4-2

GENERAL OPERATIONAL SETUP..................................................................................4-3

ACCEPTANCE TESTING..................................................................................................4-3

SETTING UP FOR THYROID UPTAKES OR WIPE TESTS ............................................4-4

SETTING UP FOR LAB TESTS (URINE & BLOOD).........................................................4-4

SETUP FOR STAFF BIOASSAY.......................................................................................4-4

SETUP FOR MULTICHANNEL ANALYZER .....................................................................4-4

SYSTEM INITIALIZATION....................................................................................................5-1

DATE & TIME SETUP.......................................................................................................5-1

Date Entry Format..........................................................................................................5-1

Changing the Time and Date Setting.............................................................................5-2

SETTING HOSPITAL OR FACILITY NAME......................................................................5-3

CURIES / BECQUEREL SETUP.......................................................................................5-4

Cs137 STANDARD SETUP...............................................................................................5-7

CHI-SQUARE TEST SETUP.............................................................................................5-9

CONVERSION FACTORS ..............................................................................................5-11

Entering Nuclide Name................................................................................................5-13

Selecting Measure or Input CF....................................................................................5-14

Input CF...................................................................................................................5-14

Measure CF.............................................................................................................5-15

ACCEPTANCE & QUALITY ASSURANCE TESTS.............................................................6-1

ACCEPTANCE TESTS......................................................................................................6-1

QUALITY ASSURANCE TESTS .......................................................................................6-1

Daily Tests.....................................................................................................................6-1

Monthly Tests.................................................................................................................6-1

Quarterly Tests ..............................................................................................................6-2

CALIBRATION TEST.........................................................................................................6-2

CHI-SQUARE TEST..........................................................................................................6-5

AUTO CALIBRATION TEST..............................................................................................6-5

MDA TEST.........................................................................................................................6-9

DIAGNOSTICS................................................................................................................6-12

Diagnostics Printout.....................................................................................................6-13

System Configuration..............................................................................................6-13

Nuclide Data............................................................................................................6-13

Additional Nuclides..................................................................................................6-14

User Keys................................................................................................................6-14

Standard Source......................................................................................................6-14

PROM Values..........................................................................................................6-14

Memory Tests..........................................................................................................6-14

November 07 TABLE OF CONTENTS TOC-iii

CAPINTEC, INC. CAPTUS® 600

THYROID UPTAKE SETUP.................................................................................................7-1

COUNTING METHODS ....................................................................................................7-1

PROTOCOLS....................................................................................................................7-4

Adding a Protocol ..........................................................................................................7-6

Editing a Protocol.........................................................................................................7-11

Deleting a Protocol ......................................................................................................7-11

Printing Protocol Information .......................................................................................7-11

THYROID UPTAKE GENERAL INSTRUCTIONS................................................................8-1

ACCESSING THYROID UPTAKE STUDIES....................................................................8-1

ENTERING PATIENT DEMOGRAPHICS.........................................................................8-2

SELECTING PROTOCOL.................................................................................................8-3

SELECTING PATIENT......................................................................................................8-4

PRINTING THYROID UPTAKE PATIENT SUMMARY.....................................................8-5

VIEWING PATIENT INFORMATION.................................................................................8-5

SELECTING PATIENT TO MEASURE.............................................................................8-6

MEASURING THE NECK AND THIGH.............................................................................8-7

PRE-DOSE MEASUREMENT...........................................................................................8-9

PRINTING RESULTS......................................................................................................8-11

THYROID UPTAKE: ONE CAPSULE METHOD .................................................................9-1

GENERAL PROCEDURE .................................................................................................9-1

PRE-DOSE MEASUREMENT...........................................................................................9-1

ENTERING CAPSULE DATA............................................................................................9-2

MEASURING THE CAPSULE(S)......................................................................................9-3

ADMINISTERED DOSE....................................................................................................9-6

Administering the Dose Later ........................................................................................9-6

Entering Administered Dose Data .................................................................................9-7

UPTAKE MEASUREMENT...............................................................................................9-8

VIEWING RESULTS .........................................................................................................9-9

THYROID UPTAKE: TWO CAPSULE METHOD...............................................................10-1

GENERAL PROCEDURE ...............................................................................................10-1

PRE-DOSE MEASUREMENT.........................................................................................10-1

ENTERING ADMINISTERED DOSE...............................................................................10-1

MEASURING THE REFERENCE CAPSULE(S).............................................................10-3

UPTAKE MEASUREMENT.............................................................................................10-6

VIEWING RESULTS .......................................................................................................10-7

THYROID UPTAKE: STANDARD CAPSULE METHOD...................................................11-1

GENERAL PROCEDURE ...............................................................................................11-1

ACCESSING TU STANDARD.........................................................................................11-1

ADDING A TU STANDARD.............................................................................................11-2

EDITING A TU STANDARD............................................................................................11-3

DELETING A TU STANDARD.........................................................................................11-3

PRINTING TU STANDARD DATA..................................................................................11-4

MEASURING TU STANDARD........................................................................................11-4

SELECTING STANDARD FOR TU STUDY....................................................................11-6

PRE-DOSE MEASUREMENT.........................................................................................11-7

ENTERING ADMINISTERED DOSE...............................................................................11-7

TOC-iv TABLE OF CONTENTS November 07

CAPINTEC, INC. CAPTUS® 600

UPTAKE MEASUREMENT .............................................................................................11-9

VIEWING RESULTS........................................................................................................11-9

WIPE TEST SETUP............................................................................................................12-1

INTRODUCTION.............................................................................................................12-1

WIPE DESCRIPTIONS....................................................................................................12-2

Entering Data for a Wipe Location...............................................................................12-2

Adding a Location........................................................................................................12-3

Editing or Deleting a Location......................................................................................12-4

TRIGGER LEVEL/COUNT TIME.....................................................................................12-4

GENERIC CONVERSION FACTORS.............................................................................12-6

ADDITIONAL NUCLIDES................................................................................................12-7

USER KEY ASSIGNMENT..............................................................................................12-9

WIPE TEST.........................................................................................................................13-1

INTRODUCTION.............................................................................................................13-1

MEASURING BACKGROUND........................................................................................13-1

MEASURING A WIPE .....................................................................................................13-3

WIPE RESULTS..............................................................................................................13-5

WIPE GRAPHICS SCREEN............................................................................................13-6

Scale/Cursor Mode......................................................................................................13-7

Activity of a Nuclide......................................................................................................13-7

Activity for Generic Conversion Factor ........................................................................13-7

WIPE REPORT................................................................................................................13-7

INTERPRETING WIPE RESULTS ..................................................................................13-9

LAB TESTS SETUP ...........................................................................................................14-1

INTRODUCTION.............................................................................................................14-1

GENERAL PROCEDURE................................................................................................14-1

STARTING LAB TESTS..................................................................................................14-2

ENTERING PATIENT DEMOGRAPHICS .......................................................................14-3

MEASUREMENT PROCEDURE.....................................................................................14-4

LAB TESTS: URINE TEST.................................................................................................15-1

INTRODUCTION.............................................................................................................15-1

PERFORMING SCHILLING TEST MEASUREMENTS...................................................15-1

LAB TESTS: BLOOD TESTS.............................................................................................16-1

INTRODUCTION.............................................................................................................16-1

BLOOD VOLUME (Cr51).................................................................................................16-1

BLOOD VOLUME (I125)..................................................................................................16-6

RED BLOOD CELL SURVIVAL.....................................................................................16-10

STAFF BIOASSAY.............................................................................................................17-1

STAFF BIOASSAY DATA................................................................................................17-1

Adding Staff Member...................................................................................................17-2

Editing Staff Member Data...........................................................................................17-3

Deleting a Staff Member..............................................................................................17-4

ENTERING THE BIOASSAY PROTOCOL......................................................................17-4

X-RAY/GAMMA RATIO...................................................................................................17-5

November 07 TABLE OF CONTENTS TOC-v

CAPINTEC, INC. CAPTUS® 600

MAKING BIOASSAY MEASUREMENTS........................................................................17-5

PRINTING STAFF BIOASSAY RESULTS......................................................................17-7

MULTICHANNEL ANALYZER SETUP..............................................................................18-1

INTRODUCTION.............................................................................................................18-1

MCA SETUPS.................................................................................................................18-1

Adding a Setup............................................................................................................18-3

Editing a Setup ............................................................................................................18-6

Deleting a Setup..........................................................................................................18-6

Printing All the Setups .................................................................................................18-6

MULTICHANNEL ANALYZER OPERATION ....................................................................19-1

MCA MEASUREMENTS.................................................................................................19-1

Calibration....................................................................................................................19-2

MEASURING BACKGROUND........................................................................................19-2

MEASURING A SOURCE...............................................................................................19-4

Activity of a Nuclide .....................................................................................................19-8

Exiting MCA Measurement..........................................................................................19-8

CLEANING AND MAINTENANCE.....................................................................................20-1

INTRODUCTION.............................................................................................................20-1

CLEANING INSTRUCTIONS..........................................................................................20-1

PREVENTATIVE MAINTENANCE..................................................................................20-2

Collimator Block Inspection .........................................................................................20-3

SERVICING.....................................................................................................................20-3

DISPOSAL ......................................................................................................................20-4

FUSE SERVICING..........................................................................................................20-5

Power Line Fuses........................................................................................................20-5

Readout Unit Fuses.....................................................................................................20-6

Printer Fuse.................................................................................................................20-6

ACCESSORIES AND REPLACEMENT PARTS.............................................................20-7

SHIPPING .......................................................................................................................20-7

INDEX
WARRANTY
DECLARATION OF CONFORMITY

TOC-vi TABLE OF CONTENTS November 07

CAPINTEC, INC. CAPTUS® 600

PREFACE

Thank you for purchasing the CAPINTEC line of Thyroid Uptake Measurement Systems.
Every effort has been made to insure that the information in this document is complete,
accurate, and up-to-date. CAPINTEC assumes no responsibility for the results of errors
beyond its control. Mention of products manufactured by other companies does not
necessarily constitute endorsement by CAPINTEC, Inc.

CAPTUS
OKIDATA and MICROLINE are registered trademarks of Oki Electric Industry Company, Ltd.

DESCRIPTION

Your new CAPTUS® 600 is available in several configurations. Please take a moment to
review your system to determine exactly the configuration you have received. The basic
Thyroid Uptake System consists of the following:

®

600 and CII are registered trademarks of CAPINTEC, Inc.

• Thyroid Uptake Stand and NaI (sodium iodide) Detector with Collimator, which
includes an Isolation Transformer attached to stand.

Note: Two versions of detectors are available: Flat Face Probe or Drilled Probe.

• Readout Unit.

• Printer (Various options are available)

• Cable Set for connecting detector, printer, etc.

• Well Counter with drilled Well detector (Optional purchase).

YEAR 2000 COMPLIANCE

The CAPTUS® 600 measurement systems contain information technology that accurately
processes date and time data between the years 1999 and 2000. These products, when
used in combination with products purchased from other manufacturers, whose products
properly exchange date and time information, will accurately process the date and time. All
future products are committed to meeting the same Year 2000 Compliance.

MEDICAL EQUIPMENT SAFETY CLASSIFICATION

• CLASS I EQUIPMENT energized from an external power source.

• TYPE B EQUIPMENT with no applied parts to the patient.

• Ordinary EQUIPMENT without protection against the ingress of water.

November 07 PREFACE p-1

CAPINTEC, INC. CAPTUS® 600

• Suitable for CONTINUOUS OPERATION.

• NOT suitable for use in an OXYGEN or a FLAMMABLE ENVIRONMENT.

ELECTROMAGNETIC INTERFERENCE POTENTIAL

This equipment complies fully with interference immunity requirements of the standard EN
60601-1-2 “Medical electrical equipment: Part 1: General safety requirements; 2.
Supplementary standard: Electromagnetic compatibility”.

This equipment generates radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to nearby devices.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference, the user is encouraged to try to correct the
interference by one of the following measures:

• Increase the separation between the equipment and the affected device.

• Plug the unit into an outlet on a circuit different from that which the affected device is

connected.

If this fails to correct the problem, please contact Capintec’s Authorized Service Center.

INSTALLATION

Your system has been shipped from the factory pre-configured and fully tested. Installation
consists of placing the components on the stand and securing them in place. Detailed
installation and assembly instructions are provided in the CAPTUS

®

600 Unpacking and

Assembly Instructions.

IMPORTANT SAFETY INFORMATION

The CAPTUS® 600 measurement system has been carefully designed to give you years of
safe and reliable performance. As with all electrical equipment, however, there are basic
precautions you must observe to avoid injuring yourself, the patient or damaging the
equipment.

• Follow the unpacking and assembly instructions document, and read this manual

• Understand all

carefully before using this equipment. Be sure to save all provided documents for
future reference.

warning and caution labels as explained in CHAPTER 1: SAFETY

chapter before operating this equipment.

p-2 PREFACE November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 1

SAFETY

These warnings and instructions for use form an integral part of the CAPTUS® 600 and must
therefore be kept available for consultation at all times. Precise compliance with the warnings
and instructions is an essential condition for normal use, correct application and thus safety
of patients and user.

SYMBOL DEFINITIONS

Dangerous Voltage Present

Protective Earth Ground

Attention: consult owner’s manual for further information

Fuse

AC Voltage

“ON” (power)

“OFF” (power)

0413

CE Mark
Waste in Electrical and Electronic Equipment (WEEE) –

This symbol indicates that the waste of electrical and
electronic equipment must not be disposed as unsorted
municipal waste and must be collected separately.
Environmentally Friendly Use Period (EFUP) – 20 years
from the date of manufacture – Toxic or hazardous
substances or elements contained in the unit will not leak
or mutate under normal operating conditions resulting in
any environmental pollution, bodily injury or damage to
assets.

November 07 SAFETY 1-1

CAPINTEC, INC. CAPTUS® 600

WARNING AND CAUTION LABELS

Located in the center section on both sides of the spring-arm of the floor stand is a warning
label, (
in the wrong position. When the weight of the collimator is removed from the spring-arm, the
arm can forcefully spring upward and cause serious bodily injury to the operator. The spring­arm must be fully extended in the upright position to prevent this hazardous condition.

Located in the front section on both sides of the spring-arm of the floor stand is a warning
label, (
spring-arm. If the collimator support pin is not fully inserted and latched into the receptacle
block of spring-arm, the collimator may detach from the spring-arm and fall onto the patient.
In addition, the arm can, again, forcefully swing upward and cause serious bodily injury to the
operator. The collimator is safely installed on the spring-arm when the red warning ring is
NOT visible between the collimator and the receptacle block. Refer to the UNPACKING AND
ASSEMBLY INSTRUCTIONS for illustrations.

Figure 1-1), concerning the hazard of removing the collimator when the spring-arm is

Figure 1-1

Figure 1-2), concerning the hazard of improperly installing the collimator onto the

Figure 1-2

Located on the top of the Isolation Transformer is a label, (

Figure 1-3), providing the system
power requirements, the voltage and serial number of the system and the replacement fuse
values for both power line voltages.

Please reference CHAPTER 20: CLEANING AND MAINTENANCE for instructions on how to
change the fuses on the CAPTUS

®

600 Isolation Transformer.

A fire hazard may exist if the wrong size of fuse is installed.

1-2 SAFETY November 07

CAPINTEC, INC. CAPTUS® 600

Figure 1-3

Located on the left side of the Isolation Transformer is a label (

Figure 1-4), with two caution
statements pertaining to the main power cord of the Isolation Transformer. The statement,
READ INSTRUCTIONS CAREFULLY BEFORE CONNECTING TO OUT L ET, directs the
user to the owner’s manual before connecting the power. The second statement alerts the
user to select an electrical power receptacle that is designated as HOSPITAL ONLY or
HOSPITAL GRADE, to insure reliable grounding is provided to the CAPTUS

®

system for

electrical safety requirements.

Figure 1-4

Located on the back panel of the CAPTUS
5

), stating the proper fuse ratings. A fire hazard may exist if the wrong size of fuse is

®

600 Readout Unit is the following label (Figure 1-

installed.

November 07 SAFETY 1-3

CAPINTEC, INC. CAPTUS® 600

Figure 1-5

Located on the connector guard on the back panel of the CAPTUS
label (

Figure 1-6), with the caution statement pertaining to safety of the operator. This
statement, DO NOT REMOVE CONNECTOR GUARD, is necessary because of the
presence of high voltage on the connectors and on the inside of the Instrument.

Figure 1-6

This “Consult Accompanying Document” symbol (
GENERAL OPERATION OVERVIEW, for instructions on how to use the Probe Offset, Well
Offset and Contrast adjustments on the CAPTUS

Figure 1-7) refers to the CHAPTER 3:

®

600 Readout Unit.

®

600 Readout Unit is a

Figure 1-7

This “Consult Accompanying Document” symbol (
GENERAL OPERATION OVERVIEW chapter in this manual, for instructions on how to use
Probe and Well High Voltage adjustments on the CAPTUS

Figure 1-8) refers to the Chapter 3:

®

600 Readout Unit.

Figure 1-8

1-4 SAFETY November 07

CAPINTEC, INC. CAPTUS® 600

CAUTIONS AND NOTES

CAUTION

Only qualified/trained personnel should operate or service this unit.

CAUTION

If the equipment is used in a manner not specified in this manual, the protection provided by
the equipment may be impaired.

CAUTION

High voltage is present inside the Detectors (up to 1000 Volts). Due to the presence of these
high voltages, opening the covers with the system plugged in may be hazardous. Refer all
servicing to qualified personnel.

CAUTION

No internal adjustments inside the Detector or Readout may be performed by the user within
the conditions of the warranty, except for changing the fuse. Due to the presence of high
voltages, opening the cover with the system plugged in may be hazardous. Refer all
servicing to qualified personnel.

CAUTION

Never use the Well Detector without the well liner in place. Liners are inexpensive and easy
to replace. A contaminated Detector is a very costly mistake. If unit becomes contaminated
remove liner and clean unit as stated in CHAPTER 20: CLEANING AND MAINTENANCE
before operating.

CAUTION

Care must be exercised when moving the system or when maintenance is performed. The
system must not be inclined more than a 15-degree angle or tip over may occur.

CAUTION

Verify that the Collimator is correctly installed as stated in the Unpacking and Assembly
Instructions. Failure to follow these instructions could result in injury or product malfunction.

CAUTION

This equipment generates radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful Electromagnetic Interference (EMI) to
nearby devices. However, there is no guarantee that interference will not occur in a particular
installation.

CAUTION

If any printer other than the model supplied by Capintec is used, the safety of the unit may be
compromised or Electromagnetic Interference (EMI) may be introduced into other devices
located in the same general area as the CAPTUS

CAUTION

The unit contains lead. The unit should be disposed of in accordance with local and national
regulations.

®

600 may become susceptible to EMI.

November 07 SAFETY 1-5

CAPINTEC, INC. CAPTUS® 600

CAUTION

The unit contains a Lithium Battery. This should be disposed of in accordance with local and
national regulations.

CAUTION

The user should always verify the validity of any measurement or test result in order to
minimize measurement errors.

NOTE

It is recommended that periodic (every five years) re-calibration of the unit be performed by
Capintec’s Authorized Service Center (reference CHAPTER 20: CLEANING AND
MAINTENANCE) to guarantee that the instrument's high reliability is maintained.

GENERAL SAFETY TIPS

• Unplug the equipment before cleaning it. Use only a damp cloth; do not use solvents
or aerosol cleaners.

• To protect the equipment from overheating, make sure none of the openings (vents)
on the Readout Unit or the Printer are blocked. Do not use the equipment directly in
front of a radiator or heat register.

• The print head, in the printer, can get quite hot when it’s been printing for a length of
time. Do not touch the print head until it has had a chance to cool.

• Do not use the equipment near water, or spill liquids of any kind into the equipment.

• Be sure that your power source matches the rating listed on the Isolation

Transformer.

• The CAPTUS

®

600 power cord has a grounded, 3-prong plug as a safety feature, and

it will only fit into a grounded outlet. Do not use an adapter to defeat the grounding.

• To avoid damaging the power cord, do not place anything on it or place it where it will
be walked on. If the cord becomes damaged, replace it immediately.

• Aside from the routine maintenance described in this manual, do not try to service
this equipment yourself. Do not make any adjustments other than those outlined in
this manual, as you may in-validate the calibration or cause damage requiring
extensive repair work. Refer servicing to qualified service personnel.

• Do not subject the Detectors to rough handling, or rapid temperature changes, as the
NaI Scintillation Crystal can be damaged. Do not use the equipment directly in front of
a radiator, heat register, or air conditioning duct.

1-6 SAFETY November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 2

FUNCTIONAL & TECHNICAL

DESCRIPTION

GENERAL

The CAPTUS® 600 Thyroid Uptake / Well System is intended to be used by trained Nuclear
Medicine Technologists for performing Thyroid Uptake, Thyroid Bioassay, Wipe Test, Blood
Volume Test, Shillings Test and RBC Survival Test.

The CAPTUS
decay corrections, efficiency calculations, and maintains appropriate storage and retrieval
files for reference data, and patient demographic data.

Your new CAPTUS
review your system to determine exactly the configuration you have received. The basic
thyroid uptake system consists of the following:

®

600 also performs Pulse Height Analysis, isotope identification, radioisotope

®

600 is available in several configurations. Please take a moment to

• Thyroid Uptake Stand and NaI (sodium iodide) Detector with Collimator, which
includes an isolation transformer, attached to stand.

Note: Two types of probe are available: Flat Face Probe or Drilled Probe.

• Readout Unit.

• Printer.

• Cable Set for connecting detector, printer, etc.

• Well Counter with drilled well detector (Optional purchase).

TECHNICAL DESCRIPTION

The CAPTUS® 600 contains a 256 channel microcontroller based pulse height analyzer.
Lower level discriminators are selectable and the firmware permits predefined or selectable
ROI’s (maximum width of 256 channels). The LCD displays alphanumeric data, live spectra,
and graphics. Corrections are automatically calculated for dead time loss. Real time and live
time may be displayed. Coarse high voltage adjustments are made from analog controls at
the back of the console. Fine high voltage adjustments and all other parameters are
controlled through the keypad.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-1

CAPINTEC, INC. CAPTUS® 600

Detector

®

Your CAPTUS
a NaI (Tl) (thallium-activated sodium iodide) crystal and photomultiplier tube detector
assemblies. When a gamma or x-ray from a radioactive source reaches the NaI crystal, it
collides with the electrons in the crystal matrix and transfers energy. The excited electron
releases this energy as visible light in direct proportion to its absorbed energy. For this
reason, NaI detectors are classified as scintillation detectors. These sequential emissions of
light for each incident ray generated from the collisions appear to the measuring system as a
single light pulse. The intensity of the pulse is directly proportional to the energy of the
incident gamma or x-ray.

The light is eventually directed toward the photomultiplier tube. The photomultiplier tube,
which is optically connected to the sodium iodide crystal, converts the visible light pulses into
electrical energy and amplifies the signal through a series of dynodes. The resultant
electrical signal is directly proportional to the intensity of the incident light pulse. Therefore,
the pulse height generated by the system is directly proportional to the energy of the incident
gamma or x-ray detected by the system.

Multichannel Analyzer

600 system is equipped with a Probe (and possibly a Well), which consists of

A multichannel analyzer (MCA) records the number and height of the electrical pulses
generated by the system, divides the pulses into groups based upon pulse height, and
provides a visible picture or spectrum of the pulses as well as count information. The
CAPTUS

®

600 divides the pulses into 4 energy bands (200, 400, 800 and 1600 keV)

consisting of 256 channels each. Since pulse height is directly related to the energy of the
incident photon, the spectrum displays the pulse heights as a graph of pulses or counts on
the vertical scale and energy on the horizontal scale. By matching the displayed spectrum to
the decay scheme of an isotope, positive identification of the radioactive source can be
achieved.

TECHNICAL SPECIFICATIONS

Thyroid Uptake Stand

Rugged floor stand with heavy duty locking casters and an articulating arm for the positioning
of detector/collimator. Individual shelves provided for the CAPTUS
printer. Mounting for the isolation transformer and the optional well detector is provided on
the base of the floor stand.

Dimensions: Height 175.3 cm (69")
Width 71.1 cm (28")
Depth 78.7 cm (31")
Weight 181.8 kg (400 lb.)
(with optional well) 213.6 kg (470 lb.)

®

600 readout unit and the

2-2 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

System Power Requirements

CAUTION

If the input voltage to the following items is not within the stated limits,

the unit may not function correctly or may be damaged.

Line Voltage: 115 or 230 VAC depending on model ordered
Line Frequency: 60 or 50 Hz
Current: 0.7 Ampere @ 115V

0.4 Ampere @ 230V
Fuse: For 115V use T 3.15AH, 250V, (Time Delay)

For 230V use T 2.5AH, 250V, (Time Delay)

Line Filter: Line filter is provided internally.

Use of a filtered line is recommended if excessive line noise is anticipated.

Environment Requirements

Operational

The instrument should be located where the level of the background radiation is as
low and as constant as possible.

The instrument should be located where the temperature is stable within a range of
+50°F to +85°F (+10°C to +30°C) and the maximum relative humidity is 90% non­condensing to warrant maximum reliability and accuracy.

The instrument should be located where the barometric pressure is within a range of
27–31 inches of mercury (91–105 kilopascals).

Storage

The instrument should be stored where the temperature is stable and the range is
from +39°F to +110°F (+4°C to +43°C) and the maximum relative humidity is 90%
non-condensing to warrant maximum reliability.

The instrument should be stored where the barometric pressure is within a range of
15–33 inches of mercury (51–112 kilopascals).

CAUTION

If these environmental requirements are not followed,

the instrument may display erroneous readings.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-3

CAPINTEC, INC. CAPTUS® 600

Isolation Transformer

®

An isolation transformer is provided with the CAPTUS
leakage current meets EN60601-1-1 Medical Equipment Safety Standard. A detachable

4.6m (15 ft) power cord, with a hospital grade plug, is provided to connect the isolation
transformer to the power source. Dual power line fuses are provided at the power entry
module for quick replacement.

Dimensions: Height 13.3 cm (5.25")
Width 17.5 cm (6.88")
Depth 10.9 cm (4.31")

Printer

Okidata 184 Turbo

80 column dot matrix printing mode.

Graphics and near letter quality text printing
Power Requirements: 115V 0.4A 50/60Hz
Dimensions: Height 8.1 cm (3.2")

Width 36.0 cm (14.2")
Depth 27.4 cm (10.8")
Weight 4.5 kg (10 lb.)

Readout Unit

600 system to ensure that the

256 channel MCA with LCD display
Power Requirements: 30 Watts

115V 0.3A 50/60Hz
Power Conditioning: Power Line Filter

Transient Voltage Suppressers
Dual Power Line Fuses

Dimensions: Height 16.5 cm (6.5")
Width 26.7 cm (10.5")
Depth 35.9 cm (14.125")
Weight 4.5 kg (10 lb.)

Nuclear Data

9 Pre-set nuclide data keys
5 User assignable nuclide data keys
Over 60 nuclides in memory (major gamma-ray energies and intensities, half-life)

2-4 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

Calibration Source Data

Memory for Cs137 (1 source for Probe, 1 source for Well)

Multichannel Pulse Height Analyzer

256 Channels
4 Gain Ranges (1, 2, 4, 8 keV per channel)
Automatic self-calibration
Linearity - within 2% of full scale
Differential Linearity - within 2% of full scale
A/D Conversion time - 35 µsec - Maximum count rate 25,000 cps (real time)
Low energy discrimination level - programmable down to 5 keV
Region of Interest - automatic or manual
Background subtraction and mean energy calculation via curve fittings
Linear display - automatic or manual
Automatic Full Width - Half Max (FWHM) measurement
Auto-ranging counts full scale
Maximum recommended dead time - 80%

Diagnostics and Test

Full system self-diagnosis including all program and data memories
Comprehensive test programs

Utilities

System Setup
Data entries (wipe test locations, staff bioassay data, nuclear data, etc.)
Staff bioassay report generation
Multichannel Analyzer (MCA)

Display

Blue Liquid Crystal Display with Cold Cathode backlighting and automatic screen
saver
Size: 6.0 × 12.0 cm (2.4" × 4.7")
Resolution: 128 × 256 pixels

Two Separate Inputs

Probe Detector Input*
Well Detector Input*
*(Individual High Voltage Power Supplies for each Detector Input)

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-5

CAPINTEC, INC. CAPTUS® 600

Probe Detector

NaI(TI) flat face crystal / PM Tube: 5.1 x 5.1 cm (2" x 2")

Features Monoline construction

Pulse Height Resolution - 8% or better for Cs137
Lead Shielded Collimator

Complies with ANSI Standard N44.3-1973

Lined with brass to minimize back scatter

Well Detector – Optional

Single 3.1 m (10 ft) High Voltage and Signal coax cable for placement of well off of
stand
NaI(TI) well type crystal / PM Tube: 5.1 x 5.1 cm (2" x 2")
Well diameter: 1.6 cm (0.625")
Well depth: 4 cm (1.5")
Featuring Monoline construction
Pulse Height Resolution – 8.5% or better for Cs137

Lead shielding – lined with brass (0.16 cm (1/16”) thick) to minimize back scatter

Thickness: 2.5 cm (1")

Height: 39.4 cm (4.5")

Diameter: 11.4 cm (4.5")

Weight: 31.8 kg (70 lb.)

Regulatory Listings

The CAPTUS
the following Standards:

EMC

Electrical

®

600 has been independently tested and is manufactured in compliance with

• European Union Norm EN 60601-1-2: Medical Electrical Equipment – Part 1
General Requirements for Safety – Section 1.2 Collateral Standard:
Electromagnetic Compatibility – Requirements and Tests

• European Union Norm EN 60601-1: Medical Electrical Equipment – Part 1
General Requirements for Safety

• European Union Norm EN 60601-1-1: Medical Electrical Equipment – Part 1
General Requirements for Safety – Section 1.1 Collateral Standard: Safety
Requirements for Medical Electrical Systems

ETL Listed

2-6 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

FUNCTIONAL DESCRIPTION

Thyroid Uptake

®

The CAPTUS
Medicine Technologists for performing Thyroid Uptake, Thyroid Bioassay, Wipe Test, Blood
Volume (with Cr-51 or I-125) Test, Shillings Test and RBC Survival Test.

Many of the Thyroid Uptake measurements are performed in exactly the same way at a
particular institution for a certain set of patients. To take advantage of this fact, the CAPTUS
600 Thyroid Uptake System is organized using the concept of protocols.

By using protocols, a set of measurement and data inputs can be defined in advance of
patient requirements. At the time of measurements, the system will prompt the technician for
the necessary patient data, dose information, dose administration times, and prompt the user
for which measurements are to be taken.

Upon taking the measurements, the CAPTUS
including any decay correction.

The basic concept of the Thyroid Uptake measurement with the CAPTUS
same for any protocol used. The uptake of the thyroid gland is equal to some portion of a
dose previously administered to the patient. However, there are three methods of calculation
to choose from.

Thyroid Uptake Nuclides

Thyroid Uptake Studies may be performed on the CAPTUS
The nuclide is chosen when entering the protocol.

Pre-Dose Measurement

600 Thyroid Uptake / Well System is intended to be used by trained Nuclear

®

600 will perform the uptake calculations,

®

600 remains the

®

600 using I123, I131 or Tc99m.

®

When a patient has been given the same nuclide that will be used in the Thyroid Uptake
Study, a more accurate result can be obtained by measuring the neck and thigh before the
dose is given. The result of this measurement will be subtracted from the actual neck and
thigh measurements.

The option to perform this Pre-Dose Measurement is chosen as part of the protocol.
Choosing this option does not force you to perform the measurement. It can be skipped if it is
not necessary.

Thyroid Uptake Protocols

The calculation method is chosen when the protocol is entered. The three calculation
methods follow.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-7

CAPINTEC, INC. CAPTUS® 600

One Capsule Method

A capsule is measured in a neck phantom. The same capsule is then administered to
the patient. At a later time, the patient returns and the Thyroid (neck) counts and thigh
counts are measured. The uptake is then calculated as:

= UptakeThyroid % ×

CountsThigh - CountsNeck

100

Counts Capsule CorrectedDecay

Standard Capsule Method

This method allows for a calculation of System efficiency with a capsule in a neck
phantom and a Thyroid Uptake calculation based upon the patient dose measured in
a dose calibrator. With this method, only one standard capsule needs to be measured
and stored. Usually this standard capsule is from the same lot of capsules as the
capsules being administered to the patient. To use this method, a standard capsule is
measured at least once daily in a neck phantom and the CAPTUS
efficiency in cpm/μCi.

The patient is administered a capsule whose activity is known and entered into the
CAPTUS

At a later time, when the patient's thyroid (neck) counts and thigh counts are
measured, the uptake is calculated as:

®

600 memory.

= UptakeThyroid % ×

CountsThigh - CountsNeck

×

Two Capsule Method

In this method, one capsule is administered to the patient, while one is stored for later
measurement as a reference capsule.

At a later time when the patient returns for an uptake measurement, the reference
capsule is measured in a neck phantom and the patient neck & thigh are measured.
The uptake is calculated as follows:

= UptakeThyroid % ×

CountsThigh - CountsNeck

®

600 calculates

100

CapsulePatient ofActivity Corrected EFF

100

Counts Capsule Reference

It is important to note that any difference in the original activity of the reference and
administered capsules has a direct effect on the Thyroid Uptake Result.

With this method, there should be as little time as possible between the measurement
of the reference capsule and the patient’s measurement because no decay correction
is made.

2-8 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

Multi-Capsules

In the One Capsule method, the patient’s dose can be more than one capsule. In the
Two Capsule method, the patient’s dose and the reference can be more than one
capsule.

There are four possible choices for Multi-Capsules option:

NO:

Only one capsule may be used.

ONE:

One capsule is measured and the result is multiplied by the number of
capsules. When this method is used, it is important that all the capsules have
the same activity to a high degree of accuracy.

EACH:

Each capsule is measured separately and the individual results are added to
obtain the actual activity.

ALL:

All the capsules are measured together.

Wipe Tests

The Wipe Test measures radioactive contamination for nuclear medicine departments and
laboratories, as mandated by state and federal radiation safety requirements.

Lab Tests – Urine

Schilling Test

The Schilling test utilizes Cobalt 57 labeled Vitamin B-12 and is used to determine B-12
deficiencies from either malabsorption, lack of intrinsic factor (pernicious anemia), or
intraintestinal destruction. The test entails collection of urine for 24 or 48 hours after the
oral administration of radioactive labeled vitamin B-12. The ratio of excreted to
administered Co-57 is calculated. If the initial results indicate a reduced amount of
excreted vitamin, the test is repeated with a second sample of labeled B-12 and intrinsic
factor.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-9

CAPINTEC, INC. CAPTUS® 600

Lab Tests – Blood

Blood Volume Test

Blood Volume determinations involving radioactive tagging are most frequently used in
specific disease conditions when the hematocrit may not accurately estimate true blood
volume. Such conditions include extensive trauma or burn patients, certain types of
anemia, and polycythemia. Most frequently used radioactive tracers are protein labeled I­125 for plasma measurements and Cr-51 tagged RBC’s for red cell mass determinations.

RBC Survival Test

RBC survival determinations involving radioactive tagging are most frequently used in
diagnosis of hemolytic anemia. The CAPTUS
parameters follow the testing protocol outlined in the Mallinckrodt RBC Survival
Instructions which utilize Sodium Chromate Cr-51 Injections. The software standardizes
the 24 hour sample to 100% survival, and automatically decay corrects each subsequent
sample. This permits the user to measure each sample as soon as it is collected. For this
reason, all sample volumes must be the same. Each sample must also have a hematocrit
(HCT) measurement. The subsequent samples are corrected for any differences in
hematocrit.

Staff Bioassay

®

600 software and default counting

All staff members who work with Iodine-131, Iodine-125, or Iodine-123 need to have regular
Bioassay measurements taken to monitor exposure levels. Most state and federal radiation
safety regulations mandate that these thyroid measurements be taken periodically.

The CAPTUS
The CAPTUS
Capintec CAPTUS
member names, ID numbers and initials should be stored in the CAPTUS

®

600 can store data for up to 20 staff members for bioassay measurements.

®

600 uses one bioassay protocol, which is user-defined. Before using the

®

600 system to perform bioassay measurements on the staff, the staff

®

600 memory (if

not, the results can't be saved), as well as the parameters for the bioassay protocol.

2-10 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 3

GENERAL OPERATING OVERVIEW

TURN ON SYSTEM

Locate the black on/off switch, which is on the back panel of the CAPTUS® 600 at the right
side. To turn the system on, push the switch up toward the white vertical line; to turn the
system off, push the switch down toward the white circle.

Note: Make sure that the CAPTUS

performing any measurement functions. If the device is not thoroughly warmed up,
measurements may not be accurate.

Note: It is recommended that you leave the system turned ON all the time.

When you first turn the system on, the Startup Screen (Figure 3-1) appears on the display.

®

600 is turned on for at least 30 minutes before

THYROID UPTAKE SYSTEM

CAPTUS™-600

COPYRIGHT 1994 ALL RIGHTS RESERVED

CAPINTEC, INC. NJ USA

Press Any Key to Continue

Figure 3-1

Press any key to continue.

LOG-ON PASSWORD

A password is required to gain access to the program.
The Log-on password screen will appear as shown in

14:32

REV X.XX

Figure 3-2.

November 07 GENERAL OPERATING OVERVIEW 3-1

CAPINTEC, INC. CAPTUS® 600

ENTER
PASSWORD

The password (which CANNOT be changed) for all CAPTUS
characters. The password is 897NNN where NNN is the last three digits of the serial number.
The serial number can be found on the data sheet shipped with your CAPTUS
as well as in the upper right corner of all printouts from your CAPTUS

Input the password (“#” will be displayed in place of each character) and press ENTER.
Figure 3-3 or Figure 3-4 will appear.

:

Figure 3-2

®

600 systems consists of 6

®

®

600.

600 system,

SYSTEM FUNCTIONS

The functions of the CAPTUS® 600 can be divided as follows:

• PROBE functions – Thyroid Uptake Studies
Bioassay of Personnel

• WELL functions – Wipe Test Monitoring
Schilling Tests
Blood Volume Studies
Red Blood Cell Survival Studies

• UTIL functions – Multichannel Analyzer
Staff Bioassay Results
Setup
Diagnostics

• TEST functions – Testing of Well and Probe

3-2 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

PROBE SCREEN

The Probe Screen is shown in Figure 3-3.

PROBE

F1

T/U

F2

STAND

F3

Figure 3-3

F4

BIO

14:32

WELL SCREEN

The Well Screen is shown is Figure 3-4.

WE L L

F 1 F 2 F3 F 4

WIPE LAB

Figure 3-4

14:32

November 07 GENERAL OPERATING OVERVIEW 3-3

CAPINTEC, INC. CAPTUS® 600

HOME Key

Pressing the HOME key when performing a Probe function returns the CAPTUS® 600 to the
Probe Screen (

Pressing the HOME key when performing a Well function returns the CAPTUS
Well Screen (

Note: If, for any reason, you need to abort a CAPTUS

Figure 3-3).

Figure 3-4).

®

600 to the

®

600 measurement or procedure,
press the HOME key. As a rule, however, there will be a “soft” [ABORT] or [EXIT]
key, or you can use the Backspace key to exit or abort from a procedure.

Changing from PROBE to WELL Functions

To perform a Well function after performing a Probe function, press HOME and then press
the WELL key.

Note: Even if you are using the Probe as a Well, you still press the WELL key for

measurements of wipe, urine, and blood samples.

Changing from WELL to PROBE Functions

To perform a Probe function after performing a Well function, press HOME and then press
the PROBE key.

CONTRAST

Located on the back panel, a control knob used to adjust the visual contrast of the
information on the liquid crystal display screen.

SCREEN DIMMER

When the CAPTUS® 600 system is on, but the keyboard has not been used for a few
minutes, the back-lit screen suddenly becomes dimmer. As soon as you press a key, the
screen returns to its normal bright display, but the key's function is

not performed.

3-4 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

FUNCTION Keys

The Keys labeled F1, F2, F3, F4 – across the top row at the left side of the keyboard – are
function keys. They correspond to the rectangles at the bottom of certain screens (as in
Figure 3-3 and Figure 3-4). The F1 key corresponds to the first rectangle, the F2 key
corresponds to the second rectangle, and so on.

For example, when the screen shows the Probe Screen (
key selects the Thyroid Uptake function; pressing the F4 [BIO] key selects the Staff Bioassay
function. When the screen shows the Well Screen (
accesses the Wipe Test Monitor program; pressing F2 [LAB] key accesses programs for
Schilling or Blood Laboratory tests.

When the rectangles at the bottom of the screen are blank, the corresponding function key
does not work for that particular screen.

These keys are sometimes referred to as “SOFT” keys.

Figure 3-3), pressing the F1 [T/U]

Figure 3-4), pressing the F1 [WIPE] key

PRINT Key

The small square at the lower right side of the function keys corresponds to the PRINT key.
The PRINT key works only when a P appears in this square on the screen. Use the PRINT
key to obtain printouts of measurement results, protocols, patient data, and other reports.

UTIL Key

The UTIL Key accesses the main Utilities menu (Figure 3-5). Utility functions include setting
the time and date on the CAPTUS
diagnostics. The UTIL key is active from the Probe or Well Screens.

1. Multichannel Analyzer

2. Staff Bio Assay Results

®

600 system, calibration, staff data, and system

U T IL IT IE S

14:32

3. Setup

4. Diagnostics

0. Re tu rn to Pro b e Sc re e n

Figure 3-5

November 07 GENERAL OPERATING OVERVIEW 3-5

CAPINTEC, INC. CAPTUS® 600

Note: The “0” on this screen will say “Return to Probe Screen” or “Return to Well Screen”

depending upon Main Screen (

Figure 3-3 or Figure 3-4) from which you entered

Utilities.

KEYBOARD

The CAPTUS® 600 keyboard is used to select functions and to input data (letters, numbers
and radionuclide names). Most keys are labeled with more than one symbol. The 1 Key, for
example, serves as both the 1 and E keys. Several keys are labeled with letters and
radionuclide names. The system automatically accepts the appropriate symbol for the
function you are performing. For some screens, you can select whether the keys will input
letters or numbers.

BSP Key

The BSP key serves 2 functions.
When using the keyboard to input words or numbers, incorrect entries can be corrected by

using the backspace BSP key to back up and erase a current entry. This key, located just
above the ENTER key, erases characters one at a time.

When the keyboard is not being used to enter a value, the BSP key can be used to back step
through the current procedure. For example, in a multiple screen entry such as Thyroid
Uptake Protocol, the BSP key can be used to return to the previous entry screen to re-enter
any value.

PROMPT

Many screens include a prompt character; a triangular marker (>) that shows where on the
screen data is input or selected.

ARROW Keys

The ARROW keys are located on the bottom row of the keyboard, just to the left of the
ENTER key. (The RIGHT/DOWN ARROW is also the space SP (Space) key.)

The ARROW keys move the prompt around the screen. The arrows on the CAPTUS
keyboard are slanted because they each work for two directions. The UP ARROW key is
also the LEFT ARROW key; the DOWN ARROW key is also the RIGHT ARROW key. On
any screen, the prompt will only move up and down, or left and right, so there will be no
confusion about which arrow to use.

3-6 GENERAL OPERATING OVERVIEW November 07

®

600

CAPINTEC, INC. CAPTUS® 600

ALPHANUMERIC ENTRIES

When a number or alphanumeric value is to be entered, the prompt will appear. After the first
character is entered, the cursor (a filled in rectangle) will appear at the next character to be
entered. When the last character is entered, the cursor will appear over the character to
indicate that no more characters may be entered. If another number or letter is pressed, a
beep will sound.

Always press the ENTER key after inputting a line of data. Pressing ENTER moves the
cursor to the next line or back to the top line if you are on the last line. (If the system beeps
and doesn't move when you try to exit a screen, you probably forgot to press the ENTER key
after your last entry.)

On a screen with more than one alphanumeric entry, the ARROW keys can be used to move
the prompt to the next line without entering any data.

Entries with Number and Letters

Some entries (e.g., RX ID, Hospital Name) can have both numbers and letters. For these
entries, the F1 key is used to switch between numbers and letters. When the screen is
displayed, F1 will be “NUM”. This means that the entry will be in letters and the F1 key is to
be pressed to change to numbers. If the first character is to be a number, press F1 [NUM]
before beginning the entry. The key will change to F1 [LET] which means that the entry will
be in numbers. The F1 key can be pressed during the entry so that it can contain both
numbers and letters.

Example: To enter ABC123DEF

Press A, B, C
Press F1 – “LET” will be displayed
Press 1, 2, 3
Press F1 – “NUM” will be displayed
Press D, E, F
Press ENTER

SPACE Key The SP (Space) key is on the DOWN ARROW and is considered a letter.

Decimal Point

The decimal point is on the UP ARROW key. If this key is pressed as the first key in an entry,
it will be interpreted as an UP ARROW. Therefore, a decimal point cannot be the first
character in an entry. To enter a number less than 1, begin with a 0 (zero).

November 07 GENERAL OPERATING OVERVIEW 3-7

CAPINTEC, INC. CAPTUS® 600

BLANK ENTRIES

While some entries are optional and may be left blank (for example, patient’s date of birth)
most are required and must be filled in. If the [OK] key is pressed while a required entry is
blank, the following message appears:

ALL FIELDS MUST BE FILLED

Press Any Key to Continue

Press any key, and then enter the required value.

INVALID VALUES

If you input a value that's unacceptable, the following error message appears:

INPUT OUT OF RANGE

Press Any Key to Continue

Refer to the section
values.

DATA ENTRY INPUT LIMITS on page 3-11 for a list of valid input

ENTERING DATE and TIME

For some applications, the CAPTUS® 600 system will ask you to input a time or date. Always
input digits, with no spaces, colons, or other punctuation marks. The CAPTUS
a 24-hour clock. For example, 9:30 a.m. would be input as 9, 3, 0, ENTER; while 9:30 p.m.
would be input as 2, 1, 3, 0, ENTER.

The Date can be entered in one of three formats: MONTH DAY YEAR (default), DAY
MONTH YEAR or YEAR MONTH DAY.

®

600 runs on

SETUP PASSWORD

A password is required to gain access to the SETUP choice from the main Utilities Menu.
The password (which CANNOT be changed) for all CAPTUS
last three digits of the serial number. When the word “PASSWORD:” appears on the screen,
type these three numbers and press ENTER (your entry will not be displayed). The serial
number can be found on the data sheet shipped with your CAPTUS
in the upper right corner of all printouts from your CAPTUS

®

600 systems consists of the

®

®

600.

600 system, as well as

3-8 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

YES or NO Answers

Whenever a question is asked, it must be answered Yes or No.
Answer the question by pressing Y and ENTER for YES or N and ENTER for NO.
You can change a YES to a NO answer, and vice versa, if you have not yet pressed the

ENTER key. When you press Y, the word “YES” appears on the screen. If you want to
change this answer to NO, press the backspace BSP key. The word “YES” disappears. Then
press N. The word “NO” appears. Then press the ENTER key to confirm this answer.

COUNTING METHODS

The CAPTUS® 600 offers two methods of counting time: REAL time and LIVE time. The
Multichannel Analyzer (MCA) in the CAPTUS
the Sodium Iodide/Photomultiplier tube detector. To measure each pulse requires a finite
amount of time. During the time the MCA is measuring the pulse another pulse cannot be
measured. Any other pulse that occurs during this time is not measured, and therefore, lost.
During this time, the MCA is said to be DEAD.

Live Time is defined as the time during which the MCA can actually measure a pulse.
Real Time is defined as the actual clock interval.

The Percent Dead Time is the Dead Time divided by the clock interval expressed as percent.
The Percent Dead Time increases as counting rate increases. To ensure accurate results,
the Dead Time should not exceed 80%. Moving the source further away from the detector
can decrease the Percent Dead Time. Dead Time is shown in the upper right hand corner of
all measurement screens and is abbreviated as dt.

When selecting a counting method, it is possible to choose a time base called LIVE or REAL.
If Live Time is chosen, the CAPTUS

®

600 counts until the MCA's “LIVE” time reaches the
specified counting period. The actual counting time is always greater than or equal to the
requested live time.

If Real Time is chosen, the CAPTUS

®

600 counts until the actual clock interval reaches the

specified count period. The count rate is calculated from measured Live Time.

®

600 measures each pulse that comes out of

November 07 GENERAL OPERATING OVERVIEW 3-9

CAPINTEC, INC. CAPTUS® 600

MEASUREMENT ERRORS

During measurements, each screen gives you instructions on what to measure with the
probe or well and what information to input with the keyboard. If a measurement does not fall
within a certain expected range, the screen displays the following message:

MEASUREMENT ERROR

Press Any Key to Continue

The following are just a few examples of situations that could trigger this error message:

• The Thyroid Uptake Protocol calls for Iodine-131, but the capsule you measure
contains Iodine-123.

• The system asks for a measurement, but the sample is not in the Probe or Well.

• The system is out of calibration causing the nuclide’s peak to appear outside of the

acceptable limits.

When you press any key, the screen goes back to the measurement you just performed so
you can correct the situation and repeat the measurement.

HIGH VOLTAGE ADJUSTMENT

The CAPTUS® 600 has two analog coarse high voltage controls, which are independently set
for each detector (Probe and Well). These controls are used for the initial calibration and
manual re-calibration of the unit (if Autocalibration fails).

Adjustment clockwise of these two controls increases the voltage and counter clockwise
decreases the voltage.

Note: The setting of these controls should not be changed unless directed by a Capintec

Service Representative. Unauthorized adjustment of these two controls will invalidate
the calibration of the unit.

OFFSET VOLTAGE ADJUSTMENT

The CAPTUS® 600 has two offset voltage controls, which are independently set for each
detector (Probe and Well). These controls are used for the initial calibration and manual re­calibration of the unit (if Autocalibration fails).

Adjustment clockwise of these two controls increases the voltage and counter clockwise
decreases the voltage.

Note: The setting of these controls should not be changed unless directed by a Capintec

Service Representative. Unauthorized adjustment of these two controls will invalidate
the calibration of the unit.

3-10 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

DISPLAY CONTRAST ADJUSTMENT

This adjustment controls the contrast of the Readout LCD. Perform adjustment until LCD
screen displays the best contrast.

DATA ENTRY INPUT LIMITS

Thyroid Uptake Protocols

REGIONS OF INTEREST

I123 I131 Tc99
Left of peak 10 – 40% 10 – 60% 10 – 40%
Right of peak 10 – 25% 10 – 25% 10 – 25%

COUNTING TIME 10-999 seconds
NUMBER OF TESTS 1 – 4
NUMBER OF REPETITIONS 1 or 2

Thyroid Uptake Measurements

DISTANCE 15 – 40 cm
NUMBER OF CAPSULES 1 – 4

DOSE & THYROID UPTAKE STANDARD

I123
I131
Tc99m

DOSE

Rx ID NUMBER 19 characters

THYROID UPTAKE STANDARD

ID NUMBER 10 characters

Cs137 Standard

ACTIVITY LIMITS

PROBE
WELL

Note: The source must be positioned so that the maximum count rate is not

exceeded.

10. – 600. μCi

1. – 9973. μCi

1. – 9973. μCi

.1 - 250. μCi
.01 - 1.0 μCi

0.37 – 22.2 MBq

0.037 – 369. MBq

0.037 – 369. MBq

3.7 - 9250. kBq

0.37 - 37. kBq

November 07 GENERAL OPERATING OVERVIEW 3-11

CAPINTEC, INC. CAPTUS® 600

Bioassay Protocol

X-RAY / GAMMA RAY (I 131) 2 – 20 % 8.5%
X-RAY / GAMMA RAY (I 123) 2 – 100% 92%
DISTANCE 15 – 40cm 25 cm

Additional Nuclide

HALF-LIFE .1 – 9999.9 (for M, H, D, Y)
ENERGY 20 – 1800 keV

Blood Volume

HEMATOCRIT .01 – 99 %
PATIENT WEIGHT .01 – 999 kg

RBC Survival Measurement

10 Measurements Per Patient
2 patients in memory

Patient Demographics

Range Default

LAST NAME 20 Characters
FIRST NAME 20 Characters
ID # 20 Characters
PHYSICIAN 24 Characters

Wipe

Description

ROOM 8 Characters
NAME 16 Characters

Background Counting

60 seconds minimum

Generic Conversion Factors

maximum of 24.9

3-12 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

Trigger Levels

BACKGROUND 60 – 9999 cpm 1 – 166.65 cps 2000 cpm
WORK 60 – 9999 dpm 1 – 166.65 Bq 2000 dpm
UNRESTRICTED 60 – 9999 dpm 1 – 166.65 Bq 200 dpm
RECEIVING, SEALED SOURCE 0.1 – 270 nCi 3.7 – 9990 Bq 5 nCi

Staff Data

LAST NAME 20 Characters
FIRST NAME 20 Characters
ID # 20 Characters
Initials 3 Characters
Mid 1 Character

Range (Ci) Range (Bq) Default (Ci)

November 07 GENERAL OPERATING OVERVIEW 3-13

CAPINTEC, INC. CAPTUS® 600

CHAPTER 4

SYSTEM SETUP

INSTALLATION

Your system has been shipped from the factory pre-configured and fully tested. Installation
consists of placing the components on the stand and securing them in place as shown in the

CAPTUS

ENVIRONMENT REQUIREMENTS

Operational

The instrument should be located where the level of the background radiation is as low and
as constant as possible.

The instrument should be located where the temperature is stable within a range of +50°F to
+85°F (+10°C to +30°C) and the maximum relative humidity is 90% non-condensing to
warrant maximum reliability and accuracy.

The instrument should be located where the barometric pressure is within a range of 27–31
inches of mercury (91–105 kilopascals).

Storage

®

600 Unpacking and Assembly Instructions document.

The instrument should be stored where the temperature is stable and the range is from
+39°F to +110°F (+4°C to +43°C) and the maximum relative humidity is 90% non-condensing
to warrant maximum reliability.

The instrument should be stored where the barometric pressure is within a range of 15–33
inches of mercury (51–112 kilopascals).

CAUTION

If these environmental requirements are not followed,

the instrument may display erroneous readings.

November 07 SYSTEM SETUP 4-1

CAPINTEC, INC. CAPTUS® 600

POWER REQUIREMENTS

CAUTION

If the input voltage to the following items is not within the stated limits,

the unit may not function correctly or may be damaged.

Line Voltage: 115 or 230 VAC depending on model ordered
Line Frequency: 60 or 50 Hz
Current: 0.7 Ampere @ 115V

0.4 Ampere @ 230V
Fuse: For 115V use T 3.15AH, 250V, (Time Delay)

For 230V use T 2.5AH, 250V, (Time Delay)

Line Filter: Line filter is provided internally.

Use of a filtered line is recommended if excessive line noise is anticipated.

TURN ON PROCEDURE

Once the system components are mounted securely and all cables are connected you are
ready to turn the system on. There are two power switches associated with the system: the
Readout Unit has a power switch located at the rear of the unit and, the Printer has a power
switch.

Your system will power up and display the CAPTUS

®

600 Start Up Screen (Figure 4-1)

14:32

THYROID UPTAKE SYSTEM

CAPTUS™-600

COPYRIGHT 1994 ALL RIGHTS RESERVED

CAPINTEC, INC. NJ USA

Press Any Key to Continue

Figure 4-1

REV X.XX

4-2 SYSTEM SETUP November 07

CAPINTEC, INC. CAPTUS® 600

GENERAL OPERATIONAL SETUP

There are several things that must be done before using the CAPTUS® 600 Thyroid Uptake
System for the first time. The following briefly describes these steps and refers the reader to
the appropriate section in the owner's manual in order to perform them.

• Verify or set the date/time. Although the date and time are set in the factory, you
should verify that the date and time are correct. Reference CHAPTER 5: SYSTEM
INITIALIZATION, SECTION: DATE & TIME SETUP.

• Set the heading name. The heading will appear at the top of all printouts. It is
recommended that the hospital name, clinic etc. be used for this option. Reference
CHAPTER 5: SYSTEM INITIALIZATION, SECTION: SETTING HOSPITAL OR
FACILITY NAME.

• Select proper units; Ci or Bq. Although the system can be changed at any time, it is
recommended that the user set the proper units prior to using the unit to prevent
confusion. Reference CHAPTER 5: SYSTEM INITIALIZATION, SECTION:
CURIES/BEQUEREL SETUP.

• Calibration Standard Source Setup: The conversion factor for the standard source
(Cesium-137) used to calibrate the CAPTUS
measured. The CAPTUS

®

600 uses a Cs137 source to calibrate daily. Data about this
source should be entered into the CAPTUS
INITIALIZATION, SECTION: Cs137 STANDARD SETUP.

• Chi-Square Setup: Before performing this test, the number of repetitions and
counting time intervals must be input. Reference CHAPTER 5: SYSTEM
INITIALIZATION, SECTION: CHI-SQUARE TEST SETUP.

• Conversion Factors Setup: In order for the CAPTUS
a radionuclide, the Conversion Factor for the radionuclide must be stored in the
CAPTUS
to calibrate the CAPTUS

®

600 system. The Conversion Factor for the standard source (Cs137) used

®

600 should also be entered or measured. Reference

CHAPTER 5: SYSTEM INITIALIZATION, SECTION: CONVERSION FACTORS.

®

600 should also be entered or

®

600. Reference. CHAPTER 5: SYSTEM

®

600 to calculate the activity of

ACCEPTANCE TESTING

The following tests must be performed prior to operational use of the unit.

• Diagnostics Test: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: DIAGNOSTICS for instructions on how to perform
this test.

• Calibration Test: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: CALIBRATION TEST for instructions on how to
perform this test.

November 07 SYSTEM SETUP 4-3

CAPINTEC, INC. CAPTUS® 600

• Chi-Square Test: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: CHI-SQUARE TEST for instructions on how to
perform this test.

• Minimum Detectable Activity: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: MDA TEST for instructions on how to perform this
test.

SETTING UP FOR THYROID UPTAKES OR WIPE TESTS

• In order to perform Thyroid Uptake Measurements, the Thyroid Uptake Setup must be
performed first. Reference CHAPTER 7: THYROID UPTAKE SETUP.

• In order to perform Wipe Tests with the CAPTUS
performed first. Reference CHAPTER 12: WIPE TEST SETUP.

®

600, the Wipe Setup must be

SETTING UP FOR LAB TESTS (URINE & BLOOD)

• Before performing any of the Lab Tests please reference CHAPTER 13: LAB TESTS
SETUP.

SETUP FOR STAFF BIOASSAY

• In order to perform the Bioassay procedure, the Staff Bioassay Setup must be
performed first. Reference CHAPTER 17: STAFF BIOASSAY, SECTION: STAFF
BIOASSAY DATA.

SETUP FOR MULTICHANNEL ANALYZER

• Four MCA Setups can be stored in the CAPTUS® 600. Reference CHAPTER 18:
MULTICHANNEL ANALYZER SETUP.

4-4 SYSTEM SETUP November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 5

SYSTEM INITIALIZATION

DATE & TIME SETUP

Date Entry Format

Although dates are displayed as month-day-year, the date is entered in numeric format (2
digits for month, 2 digits for day, 2 digits for year).

This format differs around the world. You may use this feature to choose the format that you
use.

The format choices are:

• MONTH-DAY-YEAR,

• DAY-MONTH-YEAR, or

• YEAR-MONTH-DAY.

The default is MONTH-DAY-YEAR.
When the Setup Menu appears, press 8 to select OTHER. The Other menu (

appear.

14:32

Figure 5-1) will

1. SE T DA T E /T IME

2. DATE ENTR Y FO RM AT

3. HOSPITAL NAM E

0. RETURN TO SETUP MENU

Figure 5-1

Press 2 to select DATE ENTRY FORMAT. The currently selected format (or the default) will
be displayed as shown in

November 07 SYSTEM INITIALIZATION 5-1

Figure 5-2.

CAPINTEC, INC. CAPTUS® 600

CHOOSE DATE ENTRY FORMAT

FORMAT: MMDDYY

FORM

Press F1 [FORM] to switch from MMDDYY to DDMMYY to YYMMDD.
When the desired format is displayed, press F4 [OK].

Changing the Time and Date Setting

The Capintec CAPTUS
can be documented. It is important that Date and Time be set properly before using the
CAPTUS
clock.

When the Other menu appears (
date and time will be displayed (

®

600. All sources are decay corrected based upon the CAPTUS® 600 internal

®

600 has an internal clock so that the date and time of all procedures

Figure 5-2

Figure 5-1), press 1 to select SET DATE / TIME. The current

Figure 5-3).

IT IS N OW

OK

OC T 0 6 2007 11:01

DO YOU W ANT TO CHANGE
DATE O R TIME?

Figure 5-3

If the Date and/or Time needs to be changed, press Y and then press the ENTER key.

5-2 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

The Date and Time Entry Screen (Figure 5-4) will appear with the current date and time as
the defaults. The examples will be shown with the Date Entry Format that has been chosen
(or the default of MMDDYY if no choice has been made).

DATE: OCT 18, 2007

TIME: 11:01

Example: July 4 1994

Exam p le: 9:05am 9:05pm

070494

0905 2105

OK

Figure 5-4

To change the date, input six digits that represent the current date, and press the ENTER
key.

To change the time, input the three or four digits that represent the current time, and press
the ENTER key.

Press F4 [OK] when both date and time are correct.
The new date and time will then be displayed for verification.

SETTING HOSPITAL OR FACILITY NAME

All printouts from the Capintec CAPTUS® 600 include your hospital or facility name and
address.

The Hospital Name consists of up to 4 lines of 30 characters each.
When the Other menu appears (

currently entered Hospital Name (or blank if it has never been entered) will appear as shown
in

Figure 5-5.

Figure 5-1), press 3 to select HOSPITAL NAME. The

November 07 SYSTEM INITIALIZATION 5-3

CAPINTEC, INC. CAPTUS® 600

13:06

HOSPITAL NAME
>

NUM

Input up to 4 lines for the hospital name.
Press F1 [NUM] to switch to numeric input and display “LET” for F1.
Press F1 [LET] to switch back to letter input and display “NUM” for F1.
Press F4 [OK] when the entry is correct.
“PLEASE WAIT” will appear on the screen while the Hospital Name is being saved in

memory.

Figure 5-5

OK

CURIES / BECQUEREL SETUP

The CAPTUS® 600 can display units of radiation measurements in Curies or Becquerels.
Setting the units to Curie or Becquerels in this section configures the entire CAPTUS
All data entry will be in the system units. All displays and printouts are always in the system
units. If the system units are changed with the following setup procedure, all values are
recalculated.

To change these units of measure, press the HOME key and then the UTIL key. The main
Utilities Menu (

Figure 5-6) will appear.

®

600.

5-4 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

U T IL IT IE S

14:32

1. MULTI CH ANN EL AN ALY ZE R

2. STAFF BIO ASSAY R ESU LTS

3. SETUP

4. D I AGN OS T IC S

0. RETURN TO PROBE SCREEN

Figure 5-6

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
7

) will appear.

Note: Selection 0 will display “RETURN TO WELL SCREEN” if the Utilities menu is

accessed from the Well Main Screen.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 5-

SETUP

14:32

1. C i/Bq

2. TEST DATA

3. THYROID UPTAKE

4. BIO AS SAY

5. AUTO CALIBRATION

6. ACTIVITY CO NVER SION FACTO RS

7. WIPE AND MCA SETUP

8. OTH ER

0. RETURN TO UTILITIES MENU

Figure 5-7

Press 1 to select Ci/Bq. The Ci/Bq Screen appears (
selection (the default is Ci).

Figure 5-8) displaying the current

November 07 SYSTEM INITIALIZATION 5-5

CAPINTEC, INC. CAPTUS® 600

A C TIV IT Y WIL L BE IN C i

Ci/Bq

The F1 [Ci/Bq] key is a toggle switch. When this key is pressed, the screen changes to
Figure 5-9.

Figure 5-8

OK

A C TIV IT Y WIL L BE IN B q

Ci/Bq

When the screen displays the correct units of measure, press the F4 [OK] key. The screen
returns to the Setup menu (

The entire CAPTUS® 600 will run in the selected units. Any data or measurements already
stored in the unit will be converted to the new unit. This includes Wipe Test Trigger Levels.

Figure 5-9

Figure 5-7).

OK

5-6 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

A

R

Cs137 STANDARD SETUP

All calibration of the Capintec CAPTUS® 600 is done with a Cesium-137 standard reference
source. Before using this source to calibrate the system, the source calibration data must be
input in the CAPTUS

Press the HOME key then the UTIL key. The main Utilities menu (

®

600 memory.

UTILIT IES

Figure 5-10) will appear.

14:32

1. MULTICHANNEL ANALYZER

2. STAFF BIO ASSAY RESULTS

3. SETUP

4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

Figure 5-10

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
11

) will appear.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 5-

SETUP

14:32

1. Ci/Bq

2. TEST DAT

3. THYROID UPTAKE

4. BIO ASSAY

5. AUTO CALIBRATION

6. ACTIVITY CONVERSION FACTORS

7. WIPE AND MCA SETUP

8. OTHE

0. R ETURN TO U TILITIES MENU

Figure 5-11

Press 2 to select TEST DATA. The Test Data menu (

November 07 SYSTEM INITIALIZATION 5-7

Figure 5-12) will appear.

CAPINTEC, INC. CAPTUS® 600

1. CS137 STANDARD

2. CHI-SQUARE PROTOCOL

14:32

0. R e tu rn to S e tu p Me n u

Figure 5-12

Press 1 to select CS137 STANDARD. The Cs137 Standard Probe/Well Selection Screen
(

Figure 5-13) will appear.

1. Well

CS137 Standard

14:32

2. Probe

0. Return to Previous Screen

Figure 5-13

Select which detector the standard is for by pressing 1 for WELL or 2 for PROBE. Even if you
have a single probe and use it as Probe and Well, you must still enter a Cs137 Standard for
both. The Cs137 Standard Screen (

The word “PROBE” or “WELL” will appear on the screen to indicate which standard is being
entered. The same standard may be used for both Probe and Well but data must be input for
each in this section.

Figure 5-14) will appear.

5-8 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

μ

CS137 Standard

PROBE

So urc e ID :>
Calib Activity :

CS1

0.11

14:32

Ci

Calib Date : Jan 06, 1992

NUM

For the Source ID, input an identification name for the source. This name can include letters
and/or numbers.

Press F1 [NUM] to switch to numeric input for the Source ID and display “LET” for F1.
Press F1 [LET] to switch back to letter input for the Source ID and display “NUM” for F1.
Input the calibrated activity of the Cesium-137 source.
Input the calibration date of the Cesium-137 standard source in the format chosen in Utilities,

Date Entry Format.
Press the F4 [OK] when all the entries are correct.

Figure 5-14

OK

CHI-SQUARE TEST SETUP

Press the HOME key then the UTIL key to display the main Utilities menu (Figure 5-15).

1. MULTICHANNEL ANALYZER

2. STAFF BIO ASSAY RESULTS

3. SETUP

4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

November 07 SYSTEM INITIALIZATION 5-9

UTILIT IES

Figure 5-15

14:32

CAPINTEC, INC. CAPTUS® 600

A

R

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
16

) will appear.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 5-

SETUP

14:32

1. Ci/Bq

2. TEST DAT

3. THYROID UPTAKE

4. BIO ASSAY

5. AUTO CALIBRATION

6. ACTIVITY CONVERSION FACTORS

7. WIPE AND MCA SETUP

8. OTHE

0. R ETURN TO U TILITIES MENU

Figure 5-16

Press 2 to select TEST DATA. The Test Data menu (

1. CS137 STANDARD

2. CHI-SQUARE PROTOCOL

0. R e tu rn to S e tu p M e n u

Figure 5-17) will appear.

14:32

Figure 5-17

Press 2 to select the CHI-SQUARE PROTOCOL. The Chi-Square Protocol Screen (
18

) will appear.

5-10 SYSTEM INITIALIZATION November 07

Figure 5-

CAPINTEC, INC. CAPTUS® 600

CHI-SQUARE PROTOCOL

REPETITIONS:

COUNTING TIME:

>10

30 SEC

OK

14:32

Figure 5-18

Input the number of repetitions desired (the minimum is 5 and the maximum is 30; at least 10
repetitions is recommended).

Input the counter time for each measurement (the minimum is 10 seconds and the maximum
is 9999 seconds).

Press F4 [OK] when the correct entries have been made.

CONVERSION FACTORS

Conversion Factors are constants used to convert measurements in counts per minute (cpm)
to disintegrations per minute (dpm). The CAPTUS
the cpm measurement by the Conversion Factor of a particular nuclide. Conversion Factor
values are affected by geometry, detector efficiency, abundance of the gamma energy
peak(s) of the isotope, and the Region of Interest selected for that nuclide.

You can store Conversion Factors for all of the radionuclides already stored in your
CAPTUS

®

600 and for ten additional user-defined radionuclides, and for a “generic” nuclide.

Since some radiation safety regulations require you to document wipe test monitoring results
in dpm units, you should store Conversion Factors for the nuclides that could be present in a
wipe sample.

The CAPTUS

®

600 calculates Conversion Factors by measuring counts (in cpm) from a
calibrated sample of a specific radionuclide. Because the sample is calibrated, the CAPTUS
600 can calculate the dpm value of that sample. The CAPTUS
value by the cpm value to determine the Conversion Factor (CF) for that nuclide.

= deradionuclifor CF

®

600 calculates dpm values by multiplying

®

600 then divides the dpm

minuteper tionsdisintegra

minuteper counts

®

November 07 SYSTEM INITIALIZATION 5-11

CAPINTEC, INC. CAPTUS® 600

A

R

To access the Conversion Factors section, press the HOME key, then the UTIL key to
display the main Utilities menu (

Figure 5-19).

UTILIT IES

14:32

1. MULTICHANNEL ANALYZER

2. STAFF BIO ASSAY RESULTS

Figure 5-19

SETUP

3. SETUP

4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

Note: Selection 0 will display “RETURN TO WELL SCREEN” if the Utilities menu is

accessed from the Well Main Screen.

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
20

) will appear.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 5-

1. Ci/Bq

2. TEST DAT

3. THYROID UPTAKE

4. BIO ASSAY

5. AUTO CALIBRATION

6. ACTIVITY CONVERSION FACTORS

7. WIPE AND MCA SETUP

8. OTHE

14:32

0. R E TUR N TO UTILITIES ME NU

Figure 5-20

Press 6 to select ACTIVITY CONVERSION FACTORS. The Conversion Factor Select
Screen (

5-12 SYSTEM INITIALIZATION November 07

Figure 5-21) will appear.

CAPINTEC, INC. CAPTUS® 600

CONVERSION FACTORS

1. WELL

2. PROBE

3. VIEW/PRINT CONV FACTORS

0. RETURN TO PREVIOUS SCREEN

Figure 5-21

Press 3 to view and/or print the current Conversion Factors.
Select the appropriate detector by pressing 1 or 2.

Note: The Screen heading will say “CF FOR PROBE” or “CF FOR WELL” (

depending on the chosen detector.

Entering Nuclide Name

14:32

Figure 5-22),

CF FOR W E LL

NUCLIDE NAME: >

DONE

Type the one or two letter symbol for the nuclide. If this nuclide has just one letter, be sure to
press the SP (Space) key after the first letter. Then type the two or three numbers that
indicate the mass number for this nuclide.

Note: Use the “*” key to add the “m” for Metastable, if applicable.

The system is automatically in letter mode or number mode in the appropriate places.

Figure 5-22

OK

13:06

November 07 SYSTEM INITIALIZATION 5-13

CAPINTEC, INC. CAPTUS® 600

For example, to enter Cobalt-57, input C, O, 5, 7 and ENTER; to enter Iodine-131, input I,
SP, 1, 3, 1 and ENTER.

Press F4 [OK] when the Nuclide Name is correct.
Press F1 [DONE] if all CFs have been input or measured.
Figure 5-23 will appear.

Note: If a CF for the chosen nuclide already exists, the current value will be displayed and

you will be asked if you would like to change it. If you respond that you would like to
change it, the system will proceed to
5-22

.

Selecting Measure or Input CF

CF FOR W ELL

Figure 5-23, otherwise you will return to Figure

13:06
NUCLIDE NAME: TC99M
MEASURE CF? (Y OR N)

Press Y (YES) to measure the CF.
Press N (NO) to input a CF.

Input CF

If INPUT CF was selected, the Input CF screen (

Figure 5-23

Figure 5-24) will appear.

5-14 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

μ

CF FOR W ELL

NUCLIDE NAME: TC99m

IN P U T CF : >

Figure 5-24
Input the CF in units of dpm/cpm.
Press F4 [OK] when the value is correct. The Nuclide Name screen (

re-appear.

Note: This must be a value that had been previously measured in the CAPTUS

using the same detector and source configuration.

Measure CF

If MEASURE CF was selected, the CF Source Calibration Data screen (
will appear:

CF FOR W ELL

OK

13:06

13:06

Figure 5-23) will

®

600

Figure 5-25)

Ci

NUCLIDE NAME: TC99m

CALIB ACTIVITY: >
C A L I B DA T E :
C A L I B T IME : 1 2 :0 0

Ci/Bq

Figure 5-25

Input the calibration activity, date and time. If it is a long-lived source, the time will not
be known and can be left as 12:00.

Press F1 [Ci/Bq] to switch between entering the activity in Ci to Bq and back. This
will not affect the unit used for anything else.

Press F4 [OK] when all entries are correct.

November 07 SYSTEM INITIALIZATION 5-15

OK

Figure 5-26 will appear.

CAPINTEC, INC. CAPTUS® 600

MEASURE TC99m SOURCE IN WELL

COUNTING PERIOD: >60 SEC

EXIT

START

Figure 5-26

Input the counting time. The correct counting time depends upon the strength of the
source. Count long enough to obtain a good peak with good counting statistics.

Place the source in the correct position and press F4 [START].

Note: It is important that the source be in the same geometric relation to the detector

as the samples to be measured later. The Conversion Factors are only
applicable and accurate so long as the geometries are constant.

EXAMPLE:

• If you are measuring Conversion Factors for wipes to be done in the Well, the
calibrated source must be placed in the Well when measuring CF.

• If you are measuring Conversion Factors for Bioassay, the calibrated source
must be placed at the distance from the Probe that will be used for Bioassay
measurements.

The CAPTUS

®

600 will begin counting on the appropriate gain range for the chosen

nuclide.
If the CAPTUS

®

600 does not find a peak at the expected energy, the following

measurement error message will appear:

MEASUREMENT ERROR

Press Any Key to Continue

If this happens, press any key.

Figure 5-26 will re-appear. Check the source. If the
source was correct and correctly positioned, the counting time may have been too
short to produce a detectable peak.

If the acquisition ended successfully,

Figure 5-27 will appear.

5-16 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

200 CTS FS

4335. cpm
OK?

(Y OR N)

If the data is OK, press Y. You will then be asked to measure background.
After you accept the background, a summary screen (

example is for a measurement of Co57.

CO57

Figure 5-27

NET: 4335. cpm

200 keV

Figure 5-28) will appear. The

CALIB: 268.6kdpm

CURR EN T: 5503 dpm

CF: 1.27

EXIT

Press F4 [SAVE] to save the Conversion Factor.
Press PRINT [P] to print a report with the original calibration data, measured values

and calculated Conversion Factor.
Press F1 [EXIT] when finished.

Note: If F1 [EXIT] is pressed without first pressing F4 [SAVE], the Conversion

Factor will not be saved.

Figure 5-28

SAVE

P

November 07 SYSTEM INITIALIZATION 5-17

CAPINTEC, INC. CAPTUS® 600

CHAPTER 6

ACCEPTANCE & QUALITY

ASSURANCE TESTS

To insure proper operation of the CAPTUS
the indicated intervals.

®

600, the following tests should be performed at

ACCEPTANCE TESTS

The following tests must be performed in the following order before the initial use of the
CAPTUS

®

600:

• Diagnostics

• Calibration Test

• Chi-Square Test

• Minimum Detectable Activity

QUALITY ASSURANCE TESTS

Daily Tests

®

The CAPTUS
checked daily with the Calibration Test Procedure as described in the
section on page 6­accomplished:

1. The fine gain of the multichannel analyzer is adjusted, eliminating the need to adjust
the High Voltage. This assures the unit is calibrated.

2. The Full Width-Half Maximum (FWHM) of the Cs137 peak is measured and recorded.
Automatic Regions of Interest (ROI) are calculated from the FWHM of the cesium
photopeak measured in test.

Monthly Tests

600 does not need to be calibrated every day, but its calibration needs to be

CALIBRATION TEST

2. When the Calibration Test function is performed daily, two things are

Perform an Auto Calibration Function as described in the
section on page 6­Diagnostics module as described in the
Diagnostics Module checks the RAM, PROM and EEPROM memory, and prints out stored
nuclide and standard source data for verification, and high voltage reference number and
gain adjustments.

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-1

5. Perform a check on the system firmware functions by accessing the
DIAGNOSTICS section on page 6-12. The

AUTO CALIBRATION TEST

CAPINTEC, INC. CAPTUS® 600

Quarterly Tests

The Chi-Square Test, as described in the
performed every time Calibration Test is performed but should be performed at least
quarterly. The Chi-Square Test is performed by repeatedly measuring the Cs137 standard
using the region of interest determined in the test just performed. The measurements are
made for the number of repetitions entered in setup. However, the test can be performed for
a fewer number of repetitions by pressing [ABORT] during a measurement. In order to
calculate Chi-Square, at least 5 measurements should be made (but at least 10 is
recommended). When the test is finished, a report is printed (or displayed on the screen if
there is no printer).

The Minimum Detectable Activity (MDA) Test, as described in the
page 6­moved to a new location or a new source of radiation is located nearby).

9, should be performed whenever the background activity changes (e.g. the unit is

CHI-SQUARE TEST section on page 6-5, may be

MDA TEST section on

CALIBRATION TEST

To perform the CALIBRATION TEST, press the HOME key and then TEST key. The Test
menu (

Figure 6-1) will appear.

14:32

1. CALIBRATION TEST

2. MDA TEST

0. RETURN TO SETUP MENU

Press 1 to select CALIBRATION TEST. The Well or Probe Selection Screen (
appear.

Figure 6-1

Figure 6-2) will

6-2 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

CAPINTEC, INC. CAPTUS® 600

TEST

1. WELL

2. PROBE

0. RETURN TO PREVIOUS SCREEN

To test the Well, press 1. To test the Probe, press 2.
Place the source in the correct geometry for the detector. (i.e., in the center of the Flat Probe;

on the face of the Drilled Probe; inside the well of the Well Probe). Even if there is only a
single detector, TEST must be performed for Probe and Well. Thus, the Probe and Well tests
may have different results even if there is only one detector.

When Well or Probe has been selected, the appropriate Test Screen will appear (
or

Figure 6-4). If an ID for the Cs137 source has been entered in the Cs137 Standard Setup

Function, the ID will appear on this screen.

PROBE TEST

14:32

Figure 6-2

14:32

WE L L TE S T

Figure 6-3

14:32

MEA SU RE C S137:

The rest of the Test procedure is the same for both the Probe and Well.
Press the F4 [START] key. The counting display (

increase, the vertical scale also increases, changing from 100, to 200, 500, etc. to
accommodate for the number of counts measured in the Cs137 standard source.

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-3

CS1

START

MEA SU RE C S137:

Figure 6-4 Figure 6-3

Figure 6-5) will appear. As the counts

START

CAPINTEC, INC. CAPTUS® 600

2000 Cts FS

ABORT

800

Figure 6-5

While adjusting the fine gain of the CAPTUS

®

600 Pulse Height Analyzer (PHA), the unit
counts until the number of counts is sufficient for accurate calibration. Once the unit has
achieved a fine gain adjustment to within one channel, the unit will count until the number of
counts in the highest channel equals 1000 counts. The system uses the last peak measured
to calculate the energy resolution of the detector.

When the test is complete,

Figure 6-6 will appear.

2000 Cts FS 165.1

800

Figure 6-6

Test will print the results automatically. If the printer is off-line, or there is no printer
connected to the CAPTUS

®

600, a check printer message will appear on the screen and
prompt you to press any key to continue. If the printer is still off-line, or no printer is attached
to the system, the test data will be displayed on the screen.

The printout will show total counts in the ROI corresponding to the Cs137 peak or, if a
Conversion Factor has been stored for Cs137, activity will be printed.

If the Calibration Test fails, perform an Autocalibration function as described in the
CALIBRATION TEST

section on page 6-5. Repeat the Calibration Test. If it fails another

AUTO

time, contact Capintec’s Authorized Service Center for service.

6-4 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

CAPINTEC, INC. CAPTUS® 600

CHI-SQUARE TEST

After the printout (or screen display) of the previous section is complete, you will be asked if
you want to perform a Chi-Square Test. If so, DO NOT REMOVE THE Cs137 STANDARD,
and press Y. The Chi-Square Test will be performed using the parameters entered in
CHAPTER 5: SYSTEM INITIALIZATION, SECTION: CHI-SQUARE TEST SETUP.

The report displays the counts for each repetition and then the calculated Chi-Square.
The Chi-Square is calculated from the following equation:

n

1

2

χ

()

∑

x

1

=

i

x

i

x

Chi-Square values are given in the following table for 10, 15 and 20 measurements. The Chi­Square value should fall between the 0.95 and 0.05 probability values in the table almost all
of the time. The more stringent 0.90 and 0.10 values are given for reference.

n = # of
measurements

10 3.33 4.17 14.7 16.9
15 6.57 7.79 21.1 23.7
20 10.1 11.7 27.2 30.1

If the Chi-Square falls outside of this range, first repeat the test making sure that the
background and positioning are kept constant.

If the values are still out of range, contact Capintec’s Authorized Service Center for
assistance.

You always have the option of performing the Autocalibration Test, even when the Test
shows that calibration is within established limits.

0.95

xx

−=

i

Table 6-1

2

0.90

0.10

it measuremenfor counts = where

tsmeasuremenn for the average =

0.05

AUTO CALIBRATION TEST

When the Test procedure indicates that the CAPTUS® 600 needs to be calibrated, you must
perform the AutoCal function.

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-5

CAPINTEC, INC. CAPTUS® 600

A

R

The system also allows you to request the Auto Cal procedure, even when it is not indicated
by the Test function.

Press the HOME key, then the UTIL key. The main Utilities menu (

UTILIT IES

14:32

Figure 6-7) will appear.

1. MULTICHANNEL ANALYZER

2. STAFF BIO ASSAY RESULTS

Figure 6-7

SETUP

3. SETUP

4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

Note: Selection 0 will display “RETURN TO WELL SCREEN” if the Utilities menu is

accessed from the Well Main Screen.

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
8

) will appear.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 6-

1. Ci/Bq

2. TEST DAT

3. THYROID UPTAKE

4. BIO ASSAY

5. AUTO CALIBRATION

6. ACTIVITY CONVERSION FACTORS

7. WIPE AND MCA SETUP

8. OTHE

14:32

0. R E TUR N TO UTILITIES ME NU

Figure 6-8

Press 5 to select AUTO CALIBRATION. The Detector Select Screen (

6-6 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

Figure 6-9) will appear.

CAPINTEC, INC. CAPTUS® 600

CALIBRA TIO N

1. WELL

2. PROBE

0. RETURN TO PREVIOUS SCREEN

Figure 6-9

Press 1 to select WELL or 2 to select PROBE. After making this selection, the appropriate
Calibration Screen will appear.
data for a cesium standard was entered in the Cs137 Standard Setup, the source name will
appear on the display. Otherwise this field will be blank.

Note: Even if the CAPTUS

Well measurements, separate Auto Calibration must be done for the Well and Probe
in this section.

Figure 6-10 is an example of the Probe Calibration Screen. If

®

600 is equipped with only one detector used for both Probe and

P RO BE

C A LIB RA T ION

14:32

14:32

MEASURE Cs137:

Figure 6-10

Place the Cs137 standard source in the CAPTUS
The counting display (Figure 6-11) will appear. As the counts increase, the vertical scale also

increases, changing from 100, to 200, 500, etc. to accommodate for the number of counts
measured by the CAPTUS
accumulated for accurate calibration. After the AutoCal program sets the High Voltage, it
counts until the 662 keV gamma peak reaches 1000 counts. It then calculates the full width­half maximum (FWHM) of the peak. This FWHM is used in calculating peak widths based on
the energy resolution of the detector. The system uses the FWHM calculated in AutoCal or
Test, whichever was done last.

®

600. The CAPTUS® 600 will count until sufficient counts are

®

600 detector. Press the [F4] START key.

CS1

START

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-7

CAPINTEC, INC. CAPTUS® 600

The CAPTUS

®

600 will repeatedly adjust the High Voltage to the detector until the Cs137
peak is adjusted to 662 ±8 keV. The counting period may repeat several times until the
system is calibrated.

200 0 Cts FS d t: 4 %

ABORT

800 keV

Figure 6-11

When the AutoCal procedure is completed,

Figure 6-12 will appear and the system

automatically prints a calibration report.

2000 Cts FS 165.1 4.010keV/ch

800 keV

Figure 6-12

The screen then returns to the Setup menu.

Note: If the printer is off-line or if no printer is attached to the CAPTUS® 600, a check printer

message will appear on the screen at this point and prompt you to press any key to
continue. If a printer is attached to the unit check to be sure it is powered up, that it is
not out of paper, that the cable is connected, etc. When any key is pressed to
continue, if the printer is still off-line or if there is still no printer attached, the
calibration data will be displayed on the screen.

6-8 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

CAPINTEC, INC. CAPTUS® 600

MDA TEST

This is a test of Minimum Detectable Activity for the specific nuclide selected by the user.
The test can be performed for the Probe or Well. A nuclide is chosen for the test (the default

is Tc99m) and the appropriate energy range (400 keV or 1600 keV) is automatically selected.
The test measures the background in the Region of Interest that would be used to measure

the activity of the selected nuclide.
The user also selects the counting period and the precision used in the calculation.
The minimum detectable counting rate is given by:

MDR =

counts * p
T

where p is the precision, counts is the background counts in the channels for the nuclide, and
T is the counting time.

The precision can range from 1 to 9. The default value is 3.
To get the Minimum Detectable Activity, the minimum detectable counting rate is divided by

the efficiency for the nuclide:

MDR

MDA =

Eff

To perform the MDA Test, press the HOME key and then TEST key. The Test menu (Figure
6-13

) will appear.

14:32

1. CALIBRATION TEST

2. MDA TEST

0. RETURN TO SETUP MENU

Press

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-9

2 to select MDA TEST. The Well or Probe Selection Screen (Figure 6-14) will appear.

Figure 6-13

CAPINTEC, INC. CAPTUS® 600

MDA TEST

1. WELL

2. PROBE

0. RETURN TO PREVIOUS SCREEN

Figure 6-14
To test the Well, press
After Well or Probe is chosen, the Nuclide Entry Screen (

1. To test the Probe, press 2.

MDA TEST

WELL

NUCLIDE NAME: >TC99M

14:32

Figure 6-15) will appear.

13:06

DONE

If another nuclide is desired, type in the new nuclide name (use the
nuclides such as Tc99m).

Press
Press

F4 [OK] to continue with the MDA Test. Figure 6-16 will appear.
F1 [DONE] to abort the MDA Test.

Figure 6-15

OK

* for the m in metastable

6-10 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

CAPINTEC, INC. CAPTUS® 600

MDA TEST

WELL

COUNTING PERIOD: >6O SEC

PR E CISIO N : 3 S T . D EV.

PREC

Input the desired counting period (60 sec is the minimum allowed).
Press

is 3).
When the desired counting period and precision have been entered, MAKE SURE THAT

THERE ARE NO SOURCES NEARBY and press
After the background has been counted, the Region of Interest corresponding to the selected

nuclide will be shaded and the counting rate in that ROI will be displayed for verification. If
the counting rate is OK, (i.e., there were counts but no source), press

A report with the selected nuclide, desired precision, Minimum Detectable Counting Rate and
Minimum Detectable Activity (if there is a Conversion Factor for the selected nuclide) will be
printed.

If the printer is off-line, or there is no printer connected to the CAPTUS
message will appear on the screen and prompt you to press any key to continue. If the
printer is still off-line, or no printer is attached to the system, the results will be displayed on
the screen.

F1 [PREC] to change the precision from 1 to 9 standard deviations (the default value

Figure 6-16

START

F4 [START].

13:06

Y and ENTER.

®

600, a check printer

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-11

CAPINTEC, INC. CAPTUS® 600

DIAGNOSTICS

The CAPTUS® 600 has the ability to check system functions using a Diagnostics Utility.
To access the Diagnostics

Utilities Menu (

Access the Diagnostics Utility by pressing
appear.

Figure 6-17) will appear.

Utility, press the HOME key and then the UTIL key. The main

U T IL IT IE S

14:32

1. MULTI CH ANN EL AN ALY ZE R

2. STAFF BIO ASSAY R ESU LTS

3. SETUP

4. D I AGN OS T IC S

0. RETURN TO PROBE SCREEN

Figure 6-17

4. The Diagnostics Screen (Figure 6-18) will

DIAGNOSTICS

14:32

Figure 6-18

If the printer is off-line, or there is no printer connected to the CAPTUS
message will appear on the screen and prompt you to press any key to continue. If your
printer is available, make sure it is connected, turned on and selected.

If the printer is on-line, a three page diagnostics report will be printed out while the screen in
Figure 6-18 is on the display. After the printing has stopped, the CAPTUS® 600 will begin

6-12 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

®

600, a check printer

CAPINTEC, INC. CAPTUS® 600

checking its system memory. A display similar to Figure 6-19 will appear (the PROM values
shown are just an example). The same results will also be sent to the printer.

DIAGNOSTICS

14:32

RAM: PASS

PROM: PASS

9B87 7229 1EBE
80EF 3840 2D2C

E710 7892 57F6

EEPROM: PASS

Press any key to continue

Figure 6-19

If any of the test results indicate “FAIL” rather than “PASS”, it indicates a system malfunction.
If this happens, perform the Diagnostics Utility again. If the test(s) fail again, contact
Capintec’s Authorized Serve Center for assistance.

CAUTION!

Do NOT continue to use the CAPTUS® 600

if any Diagnostics test results read “FAIL”.

Diagnostics Printout

On the following pages is a sample Diagnostics printout. Below is a description of the
sections in the Diagnostics

System Configuration

This data is entered into the system memory at the factory. It indicates to the
CAPTUS
change this.

Nuclide Data

Nuclides List

A listing of Nuclides in the CAPTUS® 600 memory. This list is entered at the factory.
Additional nuclides may be added to this list.

Half-Life

A listing of the Half-life for each nuclide in the CAPTUS® 600 memory.

Photon Energies

A listing of the Energy Photon Peaks used by the CAPTUS® 600 in the automatic
peak searching algorithm.

®

600 which detectors are connected on the back panel. The user cannot

printout.

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-13

CAPINTEC, INC. CAPTUS® 600

Conversion Factors

Conversion Factors that have been input or measured for each nuclide. Conversion
Factors may be different for Well or a Probe. Both Conversion Factors are printed.

Additional Nuclides

A listing of nuclide data for any additional nuclides that have been entered.

User Keys

A listing of nuclides assigned to the USER keys.

Standard Source

A listing of calibration date, calibration activity and current activity of the Standard
Cs137 sources that have been entered in the CAPTUS

HV Reference (Probe and Well)

A listing of the High Voltage Reference set during the Autocalibration Test. These
values will vary between 0 and 255.

Fine Gain Adjustment (Probe and Well)

A listing of the Fine Adjustment set during Calibration Test. These values will vary
between 0 and 255.

PROM Values

These diagnostic values uniquely determine the software revision level. If the system
reads these values incorrectly, the PROM test will fail.

Memory Tests

The results of the RAM, PROM, and EEPROM tests. If the PROM test fails, the
PROM values will be printed. Any test that fails indicates a system malfunction and
warrants a call to Capintec’s Authorized Service Center.

®

600 memory.

6-14 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

CAPINTEC, INC. CAPTUS® 600

Page 1

November 07 ACCEPTANCE & QUALITY ASSURANCE TESTS 6-15

CAPINTEC, INC. CAPTUS® 600

Page 2

Page 3

6-16 ACCEPTANCE & QUALITY ASSURANCE TESTS November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 7

THYROID UPTAKE SETUP

COUNTING METHODS

Counting Methods refer to the Counting Time Base and Regions of Interest for each nuclide.
The values are the same for all entered protocols.

The CAPTUS
Multichannel Analyzer (MCA) in the CAPTUS
the Sodium Iodide/Photomultiplier tube detector. To process each pulse requires a finite
amount of time. During the time the MCA is busy, it cannot accept another pulse. Any other
pulse that occurs during this time is not measured, and is lost. During this time, the MCA is
said to be DEAD.

Live Time is defined as the time during which the MCA can actually accept and process a
pulse.

Real Time is defined as the actual clock interval.
If LIVE time is chosen, the CAPTUS

specified counting period. The actual counting time is always greater than or equal to the
requested Live Time.

If REAL time is chosen, the CAPTUS
count period. The count rate is calculated from measured Live Time.

To view or change the Counting Method, press the HOME key, then the UTIL key. The main
Utilities menu (

®

600 offers two counting time bases: REAL time and LIVE time. The

®

600 counts until the MCA's Live Time reaches the

®

600 counts until the Real Time reaches the specified

Figure 7-1) will appear.

®

600 measures each pulse that comes out of

UTILIT IES

14:32

1. MULTICHANNEL ANALYZER

2. STAFF BIO ASSAY RESULTS

3. SETUP

4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

Figure 7-1

November 07 THYROID UPTAKE SETUP 7-1

CAPINTEC, INC. CAPTUS® 600

A

R

Note: Selection 0 will display “RETURN TO WELL SCREEN” if the Utilities menu is

accessed from the Well main screen.

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
2

) will appear.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 7-

SETUP

14:32

1. Ci/Bq

2. TEST DAT

3. THYROID UPTAKE

4. BIO ASSAY

5. AUTO CALIBRATION

6. ACTIVITY CONVERSION FACTORS

7. WIPE AND MCA SETUP

8. OTHE

0. R E TUR N TO UTILITIES ME NU

Press 3 to select THYROID UPTAKE. The Thyroid Uptake Setup menu (
appear:

THYROID UPTAKE SETUP

1. COUNTING

2. PROTOCOLS

3. PRINT ALL

Figure 7-2

14:32

Figure 7-3) will

0. RETURN TO SETUP MENU

Figure 7-3

Press 1 to select COUNTING.

Note: If there are active Thyroid Patients or an active standard, a message will appear

informing you that Counting Method cannot be changed. This is to avoid changing
counting methods in the middle of a study and getting erroneous results. If you want
to see the current values, press 3 to print all the Protocols and the current Counting
Methods.

7-2 THYROID UPTAKE SETUP November 07

Figure 7-4 will appear.

CAPINTEC, INC. CAPTUS® 600

THYROID UPTAKE SETUP

COUNTIN G TIME BASE: LIVE

14:32

Counting stops when the measured Live

Time reaches the specified counting
period

BASE

The F1 [BASE] key is a toggle switch that changes the Counting Time Base between two
choices: LIVE and REAL. When the F1 [BASE] key is pressed to select REAL time, the
screen changes to

Figure 7-5.

THYROID UPTAKE SETUP

COUNTING TIME BASE: REAL
Count for Specified Real Time --

Figure 7-4

OK

14:32

Counting ra te is c a l cu la te d fro m

measured Live Time

BASE

When the information on the screen is correct, press the F4 [OK] key. The screen will
change to the Region Of Interest Screen (

THYROID UPTAKE SETUP

Figure 7-5

Figure 7-6).

I 123

REGION OF INTEREST:

> 20% TO LE FT

20% TO RIGHT

OF FULL EN ERG Y P EA K

Figure 7-6

OK

OK

14:32

November 07 THYROID UPTAKE SETUP 7-3

CAPINTEC, INC. CAPTUS® 600

The Region Of Interest Screen will be displayed for each nuclide.
The default values are 20% to the left and 20% to the right for all the nuclides.
The range limits are:

I123:

TO LEFT: from 10% to 40%
TO RIGHT: from 10% to 25%

I131:

TO LEFT: from 10% to 60%
TO RIGHT: from 10% to 25%

Tc99m:

TO LEFT: from 10% to 40%
TO RIGHT: from 10% to 25%

When the displayed information is correct, press the F4 [OK] key.

PROTOCOLS

A Thyroid Uptake study cannot be done without a protocol. No protocols come with the
CAPTUS
listing the protocols is displayed if more than one protocol has been entered.

To change or enter Protocols, press the HOME key, then the UTIL key. The main Utilities
menu (

Note: Selection 0 will display “RETURN TO WELL SCREEN” if the Utilities menu is

®

600 – they are always entered by the user. When patient data is entered, a screen

Figure 7-7) will appear.

UTILIT IES

1. MULTICHANNEL ANALYZER

2. STAFF BIO ASSAY RESULTS

3. SETUP

4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

14:32

Figure 7-7

accessed from the Well main screen.

7-4 THYROID UPTAKE SETUP November 07

CAPINTEC, INC. CAPTUS® 600

A

R

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS
8

) will appear.

®

600 serial number, and press the ENTER key. The Setup menu (Figure 7-

SETUP

14:32

1. Ci/Bq

2. TEST DAT

3. THYROID UPTAKE

4. BIO ASSAY

5. AUTO CALIBRATION

6. ACTIVITY CONVERSION FACTORS

7. WIPE AND MCA SETUP

8. OTHE

0. R E TUR N TO UTILITIES ME NU

Figure 7-8

Press 3 to select THYROID UPTAKE. The Thyroid Uptake Setup menu (
appear:

THYROID UPTAKE SETUP

1. COUNTING

2. PROTOCOLS

3. PRINT ALL

0. RETURN TO SETUP MENU

Figure 7-9

Press 2 to select PROTOCOLS. The Protocol List Screen (
If no protocols have been stored in the CAPTUS® 600, the list part of the screen is blank. All

function keys except for F1 [ADD] and F4 [DONE] are also blank as shown in

14:32

Figure 7-9) will

Figure 7-10) will appear.

Figure 7-11.

November 07 THYROID UPTAKE SETUP 7-5

CAPINTEC, INC. CAPTUS® 600

A

Adding a Protocol Press the F1 [ADD] key.

Note: If 4 protocols are already stored in the CAPTUS

While entering data for a protocol, the BSP key can be used to go back any number of
screens to review or change entries.

When the F1 [ADD] key is pressed, the Protocol Name Screen (

TU PROTOCOLS

> MAIN PROTOCOL

2ND PROTOCOL

PROTOCOL I131

EDIT

ADD

appear:

A protocol will have to be deleted to make another entry.

DEL DONE

Figure 7-10

NO ROOM FOR MORE PROTOCOLS

14:32

Press Any Key to Continue

TU PROTOCOLS

P

TU PROTOCOLS

DD

Figure 7-11

®

600, the following message will

Figure 7-12) will appear.

14:32

14:32

DONE

NAME: >

NUM

The protocol name can consist of up to 20 characters, letters and/or numbers.

7-6 THYROID UPTAKE SETUP November 07

Figure 7-12

OK

CAPINTEC, INC. CAPTUS® 600

Press F1 [NUM] to switch to numeric input and display “LET”.
Press F1 [LET] to switch back to letter input and display “NUM”.
When the protocol name is correct, press F4 [OK]. The Calculation Method Screen (

7-13

) will appear.

TU PROTOCOLS

14:32

Figure

NAME: PROT 1

CALCULATION: ONE CAPSULE

TU Calculation m ay be:

One Capsule
Standard
Two C apsules

METH

Press F1 [METH] to change the Calculation method from “ONE CAPSULE” to “STANDARD”
to “TWO CAPSULES”.

Refer to the CHAPTER 2: FUNCTIONAL & TECHICAL DESCRIPTION; SECTION:
THYROID UPTAKE PROTOCOLS for a description of the three methods.

When the desired calculation method is displayed, press F4 [OK].

Figure 7-13

TU PROTOCOLS

OK

14:32

Figure 7-14 will appear.

NAME: PROT 1

CALCULATION: ONE CAPSULE

N U CL IDE : I 1 3 1
NUMBER OF UPTAKES: 1
COUNTING REPETITIO NS: 2

NUCLD

This screen is used to select the nuclide, number of uptakes and number of counting
repetitions:

November 07 THYROID UPTAKE SETUP 7-7

NUMBR

Figure 7-14

REPS

OK

CAPINTEC, INC. CAPTUS® 600

Press F1 [NUCLD] to select the nuclide. The nuclide will cycle from “I131” to “Tc99m” to
“I123” and back to “I131”.

Press F2 [NUMBR] to select the number of uptakes in the study. The choices are “1”, “2”, “3”
or "4”.

Note: It's better to have too many measurements than too few measurements in a protocol.

If the physician decides, for example, that a patient does not need a third or fourth
measurement, the study can still be completed on the CAPTUS
problem. But if the patient is assigned to a protocol that only has two measurements,
and then the physician decides that the patient needs a third measurement, there's
no way to add another measurement for this patient in the CAPTUS
you encounter that type of problem, the best solution is to make a printout of all
patient data, and then change the last measurement of the protocol to obtain results
of the additional measurement.

Press F3 [REPS] to select the number of repetitions for each measurement. The choices are
“1” or “2”.

Note: If 2 repetitions are chosen, it is still possible to perform the measurement without

making the second repetition.

When all entries are correct, press F4 [OK].

Figure 7-15 will appear allowing the Pre-Dose

Measurement option and Counting Period to be set.

TU PROTOCOLS

14:32

®

600 without any

®

600 system. If

NAME: PROT 1

CALCULATION: ONE CAPSULE

CO UN TING P ER IOD :> 120 SEC

PRE-DOSE MEA SUREM ENT: NO

PRE

OK

Figure 7-15

Input the desired Counting Period. The minimum is 10 seconds and the maximum is 9999
seconds.

Press F1 [PRE] to select the Pre-Dose Measurement option. This key toggles between “NO”
and “YES”. The default is No.

When all entries are correct, press F4 [OK].

7-8 THYROID UPTAKE SETUP November 07

CAPINTEC, INC. CAPTUS® 600

M

M

M

If the Calculation Method is One Capsule or Two Capsules, the Multi-Capsules option is now
chosen as shown in

Figure 7-16.

TU PROTOCOLS

14:32

NAME: PROT 1

CALCULATION: ONE CAPSULE

MULTI-CAPSULES: NO

MULT

Press F1 [MULT] to switch from “NO” to “ONE” to “EACH” to “ALL”.
Refer to the CHAPTER 2: FUNCTIONAL & TECHICAL DESCRIPTION; SECTION THYROID

UPTAKE PROTOCOLS for a description of Multi-Capsules.
When the correct option is displayed, press F4 [OK].
The Measurement Times and Normal Value Range can now be input (

uptake.

TU PROTOCOLS

Figure 7-16

OK

14:32

Figure 7-17) for each

NAME: PROT 1

CALCULATION: ONE CAPSULE

UPTAKE NUMBER: 1 / 4

EASURE AT :>2 HOURS
INIMUM NORMAL VALUE : 0 %

AXIMUM NORMAL VALUE : 99 %

OK

Figure 7-17

The Uptake Number indicates which uptake the data is for and the number of uptakes that
have been chosen for the study. In the example, this is the first of 4 uptakes.

At the “MEASURE AT” prompt, input the number of hours between dose administration and
this uptake measurement.

November 07 THYROID UPTAKE SETUP 7-9

CAPINTEC, INC. CAPTUS® 600

Note: This is only the expected time of the uptake measurement for this protocol. The

actual time the study is performed will determine how results are calculated. The
actual time will appear on all reports.

The CAPTUS
range, which is determined by the next two fields, “MINIMUM NORMAL VALUE:” and
“MAXIMUM NORMAL VALUE:”. If you want to establish a normal range for this
measurement, input the minimum and maximum boundaries in these fields. If you do not
need to determine a normal range, leave these fields at the default values of 0% and 99%.
This normal range is defined by markers on the graph in the results report. They do not in
any way define normal values in a diagnostic sense. Each facility must establish these
values. The actual uptake results are the data to check when reading reports.

Press F4 [OK] when all entries are correct.
If more than one measurement was selected for this protocol, the next screen is the same as

Figure 7-17, except that the “UPTAKE NUMBER:” line has changed from 1 / 4 to 2 / 4.
Continue inputting information in this parameter screen until you finish the last Uptake

Number for this protocol.
After all the data has been entered, the protocol may be printed and/or saved (

®

600 printout can indicate whether uptake measurements are within a normal

Figure 7-18).

TU PROTOCOLS

14:32

NAME: PROT 1

CALCULATIO N: ONE CAPSULE

Press PRINT [P] to obtain a printout of the protocol.
Press F4 [DONE] to save the protocol to memory and return to the Protocol List Screen

(

Figure 7-10) with the new protocol added to the list.

Figure 7-18

DONE

P

7-10 THYROID UPTAKE SETUP November 07

CAPINTEC, INC. CAPTUS® 600

Editing a Protocol

A protocol may be changed (edited) when it is not in use. If there is an active patient with the
selected protocol, a message will appear and you will only be allowed to view the protocol,
not edit it.

When the Protocol List Screen (
prompt in front of the protocol to be edited (or viewed) and press F2 [EDIT].

All the screens described in the
current values displayed.

Deleting a Protocol

Figure 7-10) appears, use the ARROW keys to position the

Adding a Protocol section on page 7-6 will appear with the

When the Protocol List Screen (

Figure 7-10) appears, use the ARROW keys to position the

prompt in front of the protocol to be deleted and press F3 [DEL].

Note: The CAPTUS

®

600 will not allow you to delete a protocol that is assigned to an active
patient. You must complete the patient study and/or delete the patient data before
deleting a protocol.

The name of the protocol will be displayed and you will be asked if you want to delete it.
Press Y to delete the protocol. The screen returns to the Protocol List Screen (

Figure 7-10)

with that protocol deleted from the list.
Press N if the wrong protocol was selected. The screen returns to the Protocol List Screen

(

Figure 7-10) unchanged.

Printing Protocol Information

A printout of all the protocols can be obtained by pressing PRINT [P] on the Protocol List
Screen (

Figure 7-10).

An alternative way to print all protocol information is to select choice 3 from the Thyroid
Uptake Setup menu (

Figure 7-9). This can be used even if there are no protocols; in that

case the Counting Methods will be printed.

November 07 THYROID UPTAKE SETUP 7-11

CAPINTEC, INC. CAPTUS® 600

CHAPTER 8

THYROID UPTAKE GENERAL

INSTRUCTIONS

The instructions in this section pertain to all of the Calculation Methods. Further instructions
for each method are in separate sections.

The section describes:

• Accessing Thyroid Uptake Studies,

• Entering Patient Demographics,

• Selecting Protocol,

• Selecting Patient,

• Printing TU Patient Summary,

• Viewing Results,

• Selecting Patient To Measure,

• Measuring The Neck And Thigh,

• Pre-Dose Measurement, and

• Printing Results

ACCESSING THYROID UPTAKE STUDIES

Press the HOME key and the PROBE key to display the main Probe Screen (Figure 8-1).

P RO BE

F 1 F 2 F3 F 4

STAND

T/U

Figure 8-1

14:32

BIO

November 07 THYROID UPTAKE GENERAL INSTRUCTIONS 8-1

CAPINTEC, INC. CAPTUS® 600

V

Press F1 [T/U]. The Thyroid Uptake Patient Selection Screen (Figure 8-2 or Figure 8-3) will
appear. If no patients have been entered, the list is blank and only the F1 [NEW] key is
displayed.

THYROID UPTAKE

14:32

THYROID UPTAKE

14:32

>KETCHUM, LIN

MONROE, MAR

DEL

NEW

Figure 8-2

IE W MEAS P

NEW

Figure 8-3

ENTERING PATIENT DEMOGRAPHICS

Press F1 [NEW] to add a Thyroid Uptake patient. The Patient Data Screen (Figure 8-4) will
appear.

THYR OID U PTAK E

PATIENT NAM E
LAST :>

FIRST :

ID # :
D OB :
PHYS :

SEX : F

14:32

SEX

Figure 8-4

The maximum number of Thyroid Uptake patients is 15. If 15 Thyroid Uptake patients have
already been entered, a message will appear. Delete any patients whose studies have been
completed as described in the

Input data in all the fields. The “DOB” (Date of Birth) field is optional. The “SEX” field is
toggled between “M” and “F” by pressing the F1 [SEX] key.

When the data is correct, press the OK [F4] key. The system will return to the Patient
Selection Screen (

8-2 THYROID UPTAKE GENERAL INSTRUCTIONS November 07

Figure 8-2) with the new patient entered into the list.

VIEWING PATIENT INFORMATION section on page 8-5.

OK

CAPINTEC, INC. CAPTUS® 600

To exit from the Patient Selection Screen, press BSP or HOME to return to the main Probe
Screen (

Figure 8-1).

SELECTING PROTOCOL

If more than one protocol has been entered, the Select Protocol Screen (Figure 8-5) will
appear.

THYROID UPTAKE

14:32

SELECT PROTOCOL

> PRO T 1

PROT 2

PROT 3

Use the ARROW keys to position the cursor next to the protocol to be assigned to this
patient, and press the ENTER key. The Protocol Summary Screen (

KETCHUM, LIN
PROTOCOL: PROT 1

Figure 8-5

CALCULATION: ONE CAPSULE

Figure 8-6) will appear.

NUCLIDE: I 131
UPTAKES AT: 2 4 24 48 HOURS

COUNTING REPETITIONS: 2
CO U NTING PE R IOD : 60 SEC

OK? (Y OR N)

On this screen, the patient name consists of the entire last name and the first three letters of
the first name.

November 07 THYROID UPTAKE GENERAL INSTRUCTIONS 8-3

Figure 8-6

CAPINTEC, INC. CAPTUS® 600

V

V

If the Thyroid Uptake Protocol Information, displayed in Figure 8-6, is not correct, press the N
key, to answer “NO”, then press the ENTER key. The Select Protocol Screen (
re-appear.

Once the patient information is entered it can still be changed. Refer to the
PATIENT INFORMATION

The subsequent screens depend on which method has been chosen for this patient's Thyroid
Uptake protocol and will be discussed separately.

section on page 8-5 for instructions.

Figure 8-5) will

VIEWING

SELECTING PATIENT

When administered data has been entered for a patient, the measurement hours, day and
time for the first 2 uptakes (only 1 if the protocol only called for 1 uptake) is displayed. In the
following example, the protocol calls for a measurement at 2, 4 and 24 hours and the dose
was administered at 11:49 on a Tuesday.

THYROID UPTAKE

>SMITH, JOH

13:11
2 TU 13:49
4 TU 15:49

DEL

NEW

After the first measurement has been made, the result of the uptake will be displayed as
shown in

Figure 8-8.

THYROID UPTAKE

>SMITH, JOH

IEW MEAS P

Figure 8-7

2 24%

13:11

4 TU 15:49

DEL

NEW

IEW MEAS P

Figure 8-8

8-4 THYROID UPTAKE GENERAL INSTRUCTIONS November 07

CAPINTEC, INC. CAPTUS® 600

V

After the second measurement has been made, the result of the second uptake and the time
for the next uptake will be displayed as shown in

THYROID UPTAKE

DEL

Figure 8-9

>SMITH, JOH

NEW

After the third (last) measurement is made, the results of the last 2 measurements will be
displayed.

Figure 8-9.

13:11

4 30%

24 WE 11:49

IEW MEAS P

PRINTING THYROID UPTAKE PATIENT SUMMARY

To obtain a summary of the results for all the Thyroid Uptake patients, press PRINT [P] on
the Patient Selection Screen (

Figure 8-2).

VIEWING PATIENT INFORMATION

To view or print details of the results for a patient or to edit or delete a selected patient’s
data, use the ARROW keys to position the cursor next to the patient, and press the F3
[VIEW] key.

A summary of the patient’s results and scheduling will appear (the example (
for One Capsule Method after the first uptake).

Figure 8-10) is

November 07 THYROID UPTAKE GENERAL INSTRUCTIONS 8-5

CAPINTEC, INC. CAPTUS® 600

DELE

M

μ

μ

THYROID UPTAKE

DASILVA, AND

14:32

PROTOCOL: 1 CAPSULE

Ci

CAPSULE : TU 11:09 250.0

UPTAKE 1: 24%

DIT

EAS

P

Figure 8-20. Printing can be

UPTAKE 2: TU 15:09

GRAPH

Press F3 [EDIT] to edit patient data.
Press F2 [DEL] to delete patient data
Press F1 [GRAPH] to view the graphic display as shown in

done from that display.
Press F4 [MEAS] to make a measurement. The function keys disappear and the prompt

appears at the measurement to be performed.
Press PRINT [P] to print the complete Thyroid Uptake report.

Figure 8-10

SELECTING PATIENT TO MEASURE

When it is time to perform an uptake, the patient and measurement can be selected from
either the Patient Selection Screen (
above by pressing F4 [MEAS]. The Measurement Summary Screen (
with the prompt at the measurement to be performed next:

THYROID UPTAKE

DASILVA, AND

Figure 8-2) or the View Screen (Figure 8-10) described

Figure 8-11) will appear

14:32

PROTOCOL: 1 CAPSULE

CAPSULE : TU 11:09 250.0

UPTAKE 1: 24%

> UPTAKE 2: TU 15:09

Figure 8-11

Ci

8-6 THYROID UPTAKE GENERAL INSTRUCTIONS November 07

CAPINTEC, INC. CAPTUS® 600

μ

If the prompt is not at the first uptake, the previous uptake can be re-measured.
If the “ONE CAPSULE” method has been chosen and the capsule has been measured but

not administered, it can be re-measured.
Use the ARROW keys to move the prompt to the correct line if necessary.
Press ENTER to begin the measurement.
If all the scheduled measurements have been made,

THYROID UPTAKE

Figure 8-12 will appear.

14:32

DASILVA, AND

PROTOCOL: 1 CAPSULE

Ci

CAPSULE : TU 11:09 250.0

UP TAKE 1 : 2 4 %

UP T A K E 2: 30 %

> REVIEW RESULTS

MEASUREMENT FINISHED

Figure 8-12

Pressing ENTER with the prompt at “REVIEW RESULTS” will bring up the Graphic Display
Screen (

Figure 8-14) described below.

MEASURING THE NECK AND THIGH

The main part of the Thyroid Uptake Study is measuring the patient’s neck and thigh. This is
the same for all Calculation Methods.

The measurement begins by prompting the user to measure the neck at the distance
previously chosen as shown in

Figure 8-13.

November 07 THYROID UPTAKE GENERAL INSTRUCTIONS 8-7

CAPINTEC, INC. CAPTUS® 600

THYROID UPTAKE

DASILVA, AND

14:32

PROTOCOL: 1 CAPSULE

MEASURE

AT: 25 CM

NECK

COUNTING REPETITION # 1 / 2

EXIT

Figure 8-13

Note:

Position the Probe over the thyroid gland at the distance shown on the screen and press the
F4 [START] key.

A graph that plots total counts (vertical axis) versus energy levels (horizontal axis) appears
on the screen (
on the nuclide. The counting period set up in the protocol appears to the right of the graph (in
this example, 60 seconds). The counts per minute value and the plotted points on the graph
are updated each second. (If Live Time was chosen as the Counting Time Base instead of
Real Time, the counting period does not appear on the screen.)

When the counting period is finished,

Figure 8-13 calls for “COUNTING REPETITION #1”. Some protocols call for
repetitions of each measurement so that results can be averaged. In such protocols,
all measurements except room background counts are repeated.

Figure 8-14). The energy scale is marked on the horizontal axis and depends

Figure 8-15 will appear.

100

dt: 3%

START

100

5111 cpm

50sec

6557 cpm

OK?

(Y OR N )

NECK

ABORT

If the final count value does not appear to be correct, press N and ENTER. The system will
return to

8-8 THYROID UPTAKE GENERAL INSTRUCTIONS November 07

Figure 8-13 so that the measurement can be performed again.

400 keV

NECK

Figure 8-15 Figure 8-14

400 keV

CAPINTEC, INC. CAPTUS® 600

If the final count value does appear to be correct, press Y and ENTER. The Measure Thigh
Screen (

Figure 8-16) will appear.

THYROID UPTAKE

14:32

DASILVA, AND

PROTOCOL: 1 CAPSULE

MEASURE

AT: 25 CM

THIGH

COUNTING REPETITION # 1 / 2

EXIT

Figure 8-16

If the protocol selected calls for more than one repetition, the system performs another
acquisition. Re-position the Probe for each repetition. The system will return to
for each repetition of the Neck measurement.

If the second repetition is not desired, press F2 [ABORT] during the count and the
measurement will not be used.

Position the probe at the patient's thigh and press the F4 [START] key.
The next two screens that will appear on the display are exactly like

8-15

, and they function with the same directions given above for those screens.

START

Figure 8-13

Figure 8-14 and Figure

PRE-DOSE MEASUREMENT

If the protocol indicates that a Pre-Dose Measurement is to be performed, the Pre-Dose
Screen (

November 07 THYROID UPTAKE GENERAL INSTRUCTIONS 8-9

Figure 8-17) will appear.

THYROID UPTAKE

PRE-DOSE MEASUREM ENT: MEAS

SKIP

14:32

Figure 8-17

OK

CAPINTEC, INC. CAPTUS® 600

Press

F1 [SKIP] to skip the measurement (i.e. perform it later if possible or choose not to

perform it).

Figure 8-18 will appear.

THYROID UPTAKE

PRE-DOSE MEASUREMENT: SKIP

14:32

MEAS

Press
you will be asked to verify that you want to skip the Pre-Dose Measurement.

Press
If Pre-Dose Measurement is chosen, the Measure Neck Screen (

F4 [OK] to accept the displayed choice. If OK is pressed while “SKIP” is displayed,

BSP to exit the screen without making a choice and ending the current procedure.

DASILVA, AND

Figure 8-18

THYROID UPTAKE

OK

14:32

Figure 8-19) will appear.

PROTOCOL: 1 CAPSULE

MEASURE

AT: > 25 CM

NECK

COUNTING REPETITION # 1 / 2

EXIT

Figure 8-19

If the Thyroid Uptake method is “ONE CAPSULE” or “TWO CAPSULES”, the displayed “AT:”
distance of 25cm is the default value of the Probe’s position away from the patient's neck. If
this is not the value to be used for the Thyroid Uptake study, input the correct value. This
value will be used throughout the study and cannot be changed.

If the Thyroid Uptake method is “STANDARD CAPSULE”, the displayed “AT:” distance is the
distance chosen when the Standard Capsule was first measured.

START

8-10 THYROID UPTAKE GENERAL INSTRUCTIONS November 07