Siemens Polydoros SX 50, 80 Service manual

SIEMENS

POLYDOROS SX 50180

RX

SIRECON 2 Connection

Startup Instructions

as from Generator Firmware VCOOB

Register 4

RX63-050.034.07.01.02

Replaces:

Weitergabe sowie VervielfBltigung dieser Unterlage, Verwertung und Mitt&lung ihrer Inhalts nicht gestattet. soweit nicht aurdriitklich zugestanden Zuwiderhandlungen verpflichten zu Schadenerratz. Alle Rechteftirden Fall der Patenterteilung oder GM-Eintragung vorbehalten

Copyright(C) Siemens AG 1994

English

06.94

2

Startup instructions

Cover page Table of contents, revision status

1

2

3

Requirements

General information Required documentation

Required measuring instruments and devices Scope of delivery Safety notes

Notes on start-up

Preparations for dose rate setting

Notes on the VIDOMATIC P Suppression of light distributor (220 V,not for 1.1.40)

Notes on dose rate setting

Startup

Programming the options

Fluoroscopy programming Programming the lontomat P Programming for SIRCAM (if connected) Programming for digital image processing (if connected) Setting the max. skin dose rate

Final check of the skin dose rate

Setting the dose rate

Checking the dose rate for fluoroscopy Checking the dose/image for SIRCAM Calibration of the transfer Setting the TV iris diaphragm

Mirror correction Programming the fluoroscopic characteristic curves High-contrast fluoroscopy Therapy simulation Generating separate fluoroscopic characteristic curves

(short description)

Page

1 2

1-I

l-1 l-l l-2 l-2 1-2

1-2

2-1

2-l 2-2

3-1

3-1 3-1 3-4

3-5 3-6

3-7 3-8

3-8 3-11 3-12 3-13 3-14 3-16

3-17 3-l 8 3-19

3-19

Rev. 01

01

4

5

6

Siemens AG Medical Engineering Group

Transfer curves (O-point technique)

General

Generating separate curves Assignment of curves to organ button

Protocol

Programming

Options

Error notes

4-1

4-1 4-3 4-5 4-6

5-1

5-l

6-1

RX63-050.034.07.01.02

01

Rev. 01

Requirements

General information

l

These instructions apply for

POLYDOROS SX 50180 generators

The SIRECON 2 connection is the extension of the basic generator (see generator installation instructions, chap. 3-21) and contains the functions of the

POLYMATIC system: . VIDOMATIC P . SIRCAMATIC P

l

DIGIMATIC P (startup is described in the product documentation)

l

TV iris diaphragm

l

Radiographic system selection control

1-I

l

Light distributor control

For systems with RAS (x-ray system interface) components, see RAS instructions.

Required documentation

l

TV-1.1. A connection wiring diagram Xl768

l

POLYDOROS SX wiring diagram X2075

l

PL SX system configuration with service PC RX63-050.034.06

For SIRCAM:

l

Wiring diagram G5129 SIRCAM 103 or wiring diagram G5091 SIRCAM 106

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 02

1-2

Required measuring instruments and devices

l

Oscilloscope >50 MHz with delayed time base and post-triggering of the 2nd time base (e.g. Tektronix 2232)

l

Service PC with connecting cable, e.g. 99 00 400 RE999

l

Adapter (fur N93)

l

Dosimeter Dali or NOMEX

1

cm 3 measuring chamber 97 02 341 Y0388 for skin dose

99 00 218 RE990

measurement

l

Digital multimeter (DMM)

l

Set of copper filters (10 PCS.), part no. 44 06 120 RV090

Scope of delivery

l

SIRECON 2 connection

l

M99 TV-1.1. connection = KK version

l

Standard cable: KK23 = KK version

l

N93 TV-1.1. connection = RAS version

. Yl

l

N 21 SIRCAM 103 or 106 control

l

2 standard cables:

SIRCAM 103 or 106 camera

KK 42, KK 45

Safety notes

Observe the “Safety notes” contained in the installation instructions for the

generator.

l

All checks and adjustments to be carried out with x-radiation switched on, are

marked with the radiation warning symbol ‘;;’ . Provide for suitable radiation protection measures during these procedures (see TI 216).

Notes on start-up

l

For systems already prestaged and tested according to BZ at the factory (can be taken from the “test certificate, jumper protocol” contained in the “Certificates” register) only slight checks and adjustments are necessary.

l

Record the measured values resulting from the measurements marked with

the ” > W symbol in the “Measured value/start-up” column contained in the test

certificate

Siemens Medical Engineering Group

AG

RX63-050.034.07.01.02

Rev. 02

Preparations for dose rate setting

Notes on the VIDOMATIC P

l

For systems in KK version, 2 fluoroscopic characteristic curves can be programmed (Fluoro 1 and Fluoro 2).

l

For systems in RAS version, up to 4 fluoroscopic characteristic curves can

be programmed if they can be selected from the unit (Fluoro 1. . . Fluoro 4)

Normal fluoroscopy (max. 450 W)

l

Can be selected from fluoroscopic characteristic curves in the firmware (COO, CO1 , C02, C03, Cl 0, Cl 1) or

High-contrast fluoroscopy (max. 1200 W with changed high-voltage generator; as from Serial No. 01056, max. 2000 W)

l

Can be selected from fluoroscopic characteristic curves in the firmware

(C40, C41, C42, C50, C60, C61, C62, C63, C64, C65).

2-1

l

For both modes of operation, separate curves can be generated:

- within the range C80 . . .

- within the range C90 . . .

l

Dose-saving zoom can be programmed with existing iris diaphragm.

C89 for normal fluoroscopy C99 for high-contrast fluoroscopy

Therapy simulation

l

It is possible to program 2 fluoroscopic curves which can be selected from:

- fluoroscopic curves in the firmware (C40, C41, C42, C50, C60, C61, C62, C63, C64, C65).

- fluoroscopic curves within the range of C90 . . . C99 (separate curves)

l

Dose-saving zoom can be programmed with existing iris diaphragm.

Suppression of light distributor (220 V, not for 1.1. 40)

Voltage peaks caused by switching off the motor voltage of the mirror motor in the light distributor result in generator interferences.

l

For this reason, generally incorporate two RC elements, part no. 31 33 147 B2003 parallel to the motor (Fig. 3)

For 220V mirror motor voltage, reconnect

jumper x7 on board D271

Siemens Medical Engineering Group

AG

0.22pF

2

1

V-7

24V mirror (40~cm 1.1.)

3

220V mirror

l

RX63-050.034.07.01.02

Rev. 02

2-2

Preparations for dose rate setting

Notes on dose rate setting

Requirement:

For determination of the dose at the 1.1. input ( (KB) or the dose rate at the 1.1. input (KrS), position the dose measuring chamber as close as possible to the image intensifier; in the case of spotfilm devices in the cassette shaft:

- With OV units, on the tabletop,

- with UT units, on the spotfilm device rear panel,

- with C-arm units, on the grid. By means of the correction factor m (unit attenuation factor), the value resulting at

the 1.1. input can thus be determined. The unit attenuation factor m includes all attenuating layers lying between the

patient and the image receptor, and the distance factor as well. The unit attenuation factor is indicated in the unit test certificates; it can also be calculated by multiplying the attenuation factors of all individual layers.

The basic generator and the IONTOMAT as well as the l.l.-TV system must function properly.

m Unit attenuation factor

KB/KB KB#B~ K~gf KT~ f-B rT

rl

rB

f

T

= dose/dose rate directly at the 1.1. input = measured dose/dose rate in the 1.1. plane = measured dose/dose rate in front of the attenuating layers. = source-image receptor distance = distance between source and start of the attenuating layers

Cu filter

Meas. chamber in front of the attenuating layers Tabletop or spotfilm device rear panel Grid

lontomat chamber

Measuring chamber in 1.1. plane (cassette shaft)

1.1. input

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 02

Preparations for dose rate setting

Determining the correction factor Correction factor m (total) =

(source-l.1. distance/source-measuring chamber distance)2

x m-factor (lontomat chamber) x m-factor (grid)

x m-factor (tabletop etc., if between dose measuring chamber and 1.1.) etc.

- Distance correction factor (mA)

2-3

source-1.1. distance (rB) source-meas. chamber

distance (rT)

- Grid correction factor (mB) = 1.7

- IONTOMAT chamber correction factor (ml) = 1 .l

- Tabletop correction factor (m-r) = 1 .l

When setting the dose/dose rate, multiply the dose/dose rate required at the 1.1.

input by the correction factors.

e.g. 174

nGy/s x (mA x mn x ml x mr) 174nGy/sx(1.17x1.7xl.l x1.1)= 174 nGy/s x 2.4

(1 pR = 8.7

nGy)

2

Example:

= = 418 nGyls

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 02

Preparations for dose rate setting

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev.02

Startup

Programming the options

l

Establish connection between generator and service PC.

0

“System”/“Connect”:ON “Connect,BACKUP and make...”

l

Call up “Configuration” on the service PC and program correspondingly.

I Definition of the dose rate units

0

L-~_.--_-. -~~--_- _____

&stem Pata Lontiqulalion ‘. Dlepno~lcs Info tilndow

0 with ml-PI tsy and Orysnproyfamcbsnyc

3-l

1

Guide&Reference...

,,.:.. : :..

0

E~posurc Rclcssc

0 al Generator

Measuring field selection

0 at Generator

DiagnostiA !nfo Mr

Unit 2

0

Unit 3

SIREGFIWH D3

0 at Unil

0

Unit 4

@I Wilb O-R key and Ovjanplogranlchange

1

l

Perform the system programming.

(With system delivery, the system has already been programmed at the factoVI

l

With “Data”/“Restore”, load the “system configuration” from PC into the generator after programming.

Siemens AG RX63-050.034.07.01.02 Medical Engineering Group

Rev. 01

3-2

Startup

Programming of fluoroscopy

Icm Qata Z;onfiguration .:. :::.: .:

__. .,__ ..” - _...

Unit selection button:1

Notes on:

1 Programming the kind of FL

0

- Therapy simulation :

- High-contrast FC

: Programmable for units with MEGALIX tube assem-

-‘. -I--...

Diagnostics !nto Win

4

0

5

0

6

0

Unit for therapy simulation

bly and FL footswitch with 2nd pressure point

2 Programming the max. FL output for all operating modes:

0

- 450 W for normal FL

- With therapy simulation, an FL output of max. 1000 W can be programmed for tube assembly OPTILIX 150/12/50 C.

- Max. 2000 W for high-contrast FL (with high-voltage generation from ser. no. 01056)

3 Programmable for units with feedback of the current source-1.1. distance to

0

the generator via RAS, currently only POLYSTAR

MPID = (Measuring Point Image Distance) always a distance of 0300 mm lonization chamber to the 1.1. input

5 Enter SID and set identically to dose adjustment:

0

OT-units = 115 cm UT-units = max. SID (no distator)

e.g. SIRESKOP 5/45 = 115 cm

C-arm units

6 Programming takes place after “Setting the dose rate”

0

and “Calibration of the takeover”(3-13).

Siemens AG

Medical Engineering Group

SIRESKOP 5 = 100 cm

= 100 cm

RX63-050.034.07.01.02

Rev.

01

Startup

3-3

i

Doscratc: 07

Normal Curve: 11

Ls] TS/HC-Curve: 42

tic-Doserate: 139

Zoom doserate:

: 4 : 5

1:2

FC-lonlomatchanncl

OD OE @F

1

C

Doserate: 87

Normal Curve: 10

Ix] TS/HC-Curve: 41

HC-Dosers\c: 139

Automatic 1

Doserate: 87

Normal Curve: 3

[x1 TS/HC-CUIVC: 41

HC-Ooseratc: 139

Jmagc-Intensifier (II-Type]:

40/28/20/l 4

I

nGds

nGyls

$I

Notes on :

u With input of the 1.1. type, dose rate factors are preset automatically accor-

ding tothe 1.1. input areas. The dose rate factors resulting from the 1.1. formats are displayed in the

“Zoom dose rate”mask. It is possible to modify the factors independently of one another for dose-

saving zoom.

Prerequisite for this is a TV iris diaphragm.

@ The dose rate selected for fluoroscopy always refers to the largest 1.1. format!

(see

3 -4)

l

For automatic 1 and 2 (3/4), set the same dose rate values. Urological systems: If the TV iris diaphragm is used for automatic 2,

DSA systems:

l

FL characteristics Normal curve :

@ FL blocking always

(Blocking takes place after max. 10 min. according to the German law, within

the area of validity of the DHHS regulations after 5 min.)

5 Select channel in which the multiplier or SDM cable has been inserted.

0

Siemens AG Medical Engineering Group

set the double dose rate. For the control stage with high-contrast FL (stage 2) program the dose rate according to the unit-specific documentation

see 3 - 17

TS/HC curve : see3-18

q

RX63-050.034.07.01.02

Rev. 01

Startup

33cm HDR

27cm

SIRECON Kompakt (alt/old) 17

23cm HDR Sirecon Kompakt 17

neu/new 13

UMultiplier =

700

Tolerance:

33 22

17

27

17

22

23

- 950 v *1

113 235

435 13

680 (430) 174

445 14

655 (435) 261

435 261

440

730 (470)

1 nGyls

= 0.115 pR/s / 1 pR/s = 8.7 nGy/s

Full 1.1. format + 10%; with zoom formats only standard values. Values in brackets ( ) apply for TV iris diaphragm. *l applies from 7.93 (possible only with dark multiplier)

1:

2.3:

6.43i:.8)

1:

,.,‘i;:,,

1:

1.7

1:

3.1’$:8)

Programming of lontomat P

l

Select “Configuration” / “lontomat’”

l

Under “CHANNEL-Prog”, program the

selected detector multiplier or PDA (SDM)

Siemens

Medical Engineering Group

AG

RX63050.034.07.01.02

Rev. 01

Startup

3-5

Programming for SIRCAM (if connected)

.:: :‘.

1

0 Unit 2 0 Unit 3

EL(posurc Rclcasc

0 al Generator

c

-Measuring field scleciion

0

Diagnostics Info &in

SIREGRAPH D3

at Generator

l l

Perform programming for SIRCAM connected. Depending on

BV-Type /

1.1. Type

0

0 at Unit

Unit 4

SIRCAM-Type

0

Slrcam 103

0 Slrcam 106

the 1.1. used. we recomm ?d the following setti

@l, @2

Formate / Dosisleistung/

formats

Dose rate

VW4

Framespeeds -

1: 2:

1

3: 4:

r----

SIIICAU dose:

~-___

POLYDOROS SEX

Zoom Dose

Factors

(Polymatic)

Igs :

40 cm HD

40

218 1 28 400 2 20

790

14 1600 (1090) 8.24(5)

33 cm HD

33 23

261 1

560 2.1

17 1050 3.8

33 cm HDR

33

261 1 22 545

1010 1565 (990) 6.43(:.8)

1110

27 cm

17 13

27 435

17 14 1635 (1090) 3.7 (2.5)

23 cm HDR

23

574 1:

17 965 13

l

With use of a diaphragm, a reduced dose/frame (

1610 (1030) 3.1’(::8)

ding on the zoom position: “Zoom dose factors”

2.3

1

2.5

) can be preset depen-

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

Programming for digital image processing (if connected)

Diagnostics !nfo Wil

0

Unit 2 0 Unit 3

0

Unit 4

Startup

I

Exposure Release

-Measuring field selection

SIREGRAPH 03

0 al Generalor

0 al Generator

With selection of the imaging

systems:

- POLYTRON or

- FLUOROSPOT all details are preallocated.

0 at Unit

I

stem Data Contiouration :,:j.. .: :, .: Diannoslics lnlo tiindw

w Pcrlphcral gngingrnphic

BP reduction per step:

step 1:

Slep 2:

step 3: step 4: 4 EPIEJPI

II

_.. . _.... . _r .

1 EP[BP)

1

EP(Bp)

3 rr~llrl

System-specific indications are made in the instructions for the imaging system connected.

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

Startup 3-7

Setting the maximum skin dose rate

The maximally admissible values are to be set according to the country-specific

regulations.

Within the area of validity of the DHHS regulations, 9 R/min. (1320 pGy/s) must be set.

If there are no regulations, the module must be performed with “SS” OFF. For 110 kV and 70 kV, 18 mA must be entered in each case.

Note: Before measuring the dose, the dosimeter must be switched on for 20

min. at least.

l

Set minimum source-image distance on the unit (SID) : with POLYSTAR

0866

mm)

l

Attach ionization chamber at a distance of 30 cm centrally to the 1.1.

This distance must be maintained independently of the SID distance.

l

Open collimator until the ionization chamber is fully exposed.

l

Remove fuses from the 1.1. power supply.

l

Cover 1.1. input additionally, e.g. with lead rubber (due to risk of burn-inr).

l

On the service PC, select “Adjustment “/” Skindoserate”.

Feedback of the current SID by the unit with program. SID tracking

1

0

in “Unit selection“ / “Primary FC-Data”

input.

Within the area of validity of the DHHS regulations, the following applies in

2

0

addition: With high-contrast FL:

Reduced skin dose rate 5 RImin. (733 pGy/s) for normal fluoroscopy

(1 st pressure point)

With manual mode:

3

0

Reduced skin dose rate 5 R/min. (733 gGy/.s)

b.4

.

0

Fluoroscopy “ON/OFF” on board D211.

0

By means of key +/+ on the PC, modify the mA until a maximum skin dose

rate of 9 R/min. (1320 pGy/s) is measured. Adaptation for @ @ takes place automatically if programming has

beenperformed with (XI

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev.

01

3-8

4.4 .

Startup

Final check of the skin dose rate

l

Modify the source-image distance and check the dose rate. Maintain distance between ionization chamber and 1.1.

A dose rate of 9 Wmin must not be exceeded with none of the distances.

l

Finally remove the measuring devices and reinsert the fuses in the 1.1. power

supply.

Dose rate setting

Preparation:

l

Select 1.1. full format

l

Source-1.1. distance: OT units = 115 cm

UT units = max. SID (no distator) C-arm units = 100 cm

l

Attach Dali measurement chamber centrally in relation to the 1.1. input and

connect to the Dali measuring device (collimate to chamber measuring field

with collimator)

l

Attach 1.2 mm Cu to the collimator (p 4 plates, 0.3 mm)

l

Collimate to measurement chamber field

a) for multiplier

l

Select “Adjustment” / “Doserate”.

SlFlEGFtAPH 03

Siemens AG

Medical Engineering Group

RX63-050.034.07.01.02

Rev.

01

Startup

4.4 *

l

Perform adjustment via PC by means of the on-line instructions

l

By means of the tube current ( f mA), set 174 nGy/s or 20 @s,

(observe unit attenuation factors)

3-9

Note:

Fluoroscopy “ON/OFF” always from PC board 0211.

Attention: Perform dose adjustment of 770 nGls or 20 $3/s as accurately as

possible, since all dose values are derived from this.

With automatic adjustment, adjustment must

result

for multiplier ranges 7 and 2, that means the adjusted multiplier voltages are displayed. If no adjustment takes place, check among others the multiplier and the cabling (hum, drift measurement) (see generator setting instructions: lontomat startup).

Notes on software version VCOOB

During dose rate adjustment with multiplier, it is possible that 20 $3/s are not increased up to200 $3/s (174 nGy/s up to 1740 nGy/s) when fluoroscopy is swit-

ched on. The tube current is not increased and the LED in the lower right area on PC board D901 does not flash.

Remedy:

l

Leave adjustment module

l

Reinitiaize generator with “System”/“Disconnect”

l

Select “System”/“Connect” with “Connect only”

l

Reselect “Adjustment”/“Doserate” and perform adjustment If this is not successful, leave the service mode and switch the generator off

and on again.

For adjustment of multiplier area 2 (AEREA Z), proceed additionally as follows:

l

Establish connection between D271.X6.2 (MPL ref) and D271.X5 (GND).

l

Within 7 . ..lO s, fluoroscopy ON

l

After fluoroscopy ON, separate connection 0...2 s later.

l

Fluoroscopy OFF

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev.

01

3-10

Startup

b) SDM

Information: SDM (Selective Dominant Measurement) is an acquisition system for the initial brightness of the image intensifier. A PDA (Photo Diode Array) is used as recei-

ver which assumes basically the function of the multiplier.

The PDA consists of individual segments which can be selected also parallel as measuring fields. The size of the measuring fields is switched over depending on the zoom.

Prerequisite:

l

PDA must be programmable for fluoroscopy in the mask “lontomat” / “CHAN-

NEL Prog. ‘I.

0

“Invert MF”must be selected with

Preparations:

l

Do measuring arrangement identical to multiplier

l

Connect DVM to D901 X2.1 (OV) and X2.7 (signal).

In stand-by (FL OFF), OV, + 1OmV must be displayed. If more than 10mV is displayed, there is possibly external light on PDA.

q

,if POLYSTAR existing.

b.4

.

rFC4JNIT----- I

tkasurcflelds:

l

Perform adjustment via PC by means of the on-line instructions.

l

By means of the tube current ( f. mA), set 870nG/s or lOO~R/s.

I’OL YSl AH

J

(observe unit attenuation factors)

Note: Fluoroscopy “ON/OFF” always from PC board 0217

l

Check after adjustment, with ionization chamber removed :

- DVM to D901 X2.1 and X2.7

- FL ON on D211, fully open collimator

- with Rl (on DlOO in the 1.1. light distributor), set 700mV+ 35mV

. FLOFF

l

Deselect ” PDA Preadjust”

l

Attach hood of the 1.1. ligtht distributor and check setting of the 700 mV.

l

Perform sensitivity adjustment for all 1.1. formats by means of the on-line in-

structions.

Siemens Medical Engineering Group

AG

RX63-050.034.07.01.02

Rev. 01

Startup

Checking the dose rate for fluoroscopy

l

FL curve: Always program the anti-isowatt curve (00) for dose rate

measurements.

l

Record the programmed dose rate value and the programmed zoom-dose

factors (image quality test certificate 4.1.2)

l

ADC measurement chamber; with 40 cm I.I., select central measurement field.

l

Move in grid.

3-I 1

A.4

.

l

Source-1.1. distance:

OT units = 115 cm, UT units = min. SID (no Distator). C-arm units = 100 cm

l

Attach 2.1 mm Cu to the collimator (with UT units on the tabletop) .

l

Attach dose measuring chamber centrally to the 1.1. and collimate to ionization chamber size.

l

If measurement cannot be performed directly at the 1.1. input, perform measurement on the tabletop or spotfilm device rear panel and convert into

the 1.1. input by means of the unit attenuation factor (m).

l

Measure and record the dose rate values for all 1.1. formats (KQ or Krg).

l

Calculate and record the dose rate at the 1.1. input (KB).

KB=

KQ x 0.94;

KB = Krs x 0.94

m

Factor 0.94 = 6% radiation attenuation caused by dose measuring chamber.

Note: With 12 cm 1.1. format and with 14 cm 1.1. format (if measurement is not

performed directly at the 1.1. input), the dose measuring chamber is not exposed completely. As a result, the measured dose rate values are lower than the true ones. indicate this fact under “Remarks” in the test certificate.

l

Record the dose rate values and curves programmed at the customer for all steps (see 3-17 and 3-l 8) (image quality test certificate, 4.2).

l

Remove the dose measuring chamber from the beam path.

l

Open the collimator fully and record the entire kV and mA values resulting during fluoroscopy for all 1.1. formats in the image quality test certificate, 4.2. This table contains the values for indirect dose checking for future servicing.

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev.

01

3-12 Startup

Checking the dose/image for SIRCAM

l

For measuring arrangement, see “Checking the dose rate”.

l

Select SIRCAM

l

Call up (or generate) zero-point technique organ program

- small focus

- 1 f/s or single frame

- 70 kV plateau (Cl4 with preliminary version display in HEX : OE , selectable with ms buttons)

44

.

l

Measure and record dose/image for all 1.1. formats (Kag or KT~).

If the pointer of the dose measuring device does not deflect enough, make several exposures and divide the measured dose value by the number of exposures.

l

Calculate and record the dose at the 1.1. input:

KB= KB~

x 0.94;

KB = Kra x 0.94

m

Factor 0.94= 6% radiation attenuation caused by dose measuring chamber.

l

Remove the dose measuring chamber from the beam path and record the indicated kV values and the resulting mAs values for one exposure each for all 1.1. formats in the image quality test certificate (7.1 .I .2). If the mAs values are not indicated, measure the mAs values with the mAs meter.

Note: With 12 cm 1. I. format and with 14 cm 1.1. format (if measurement is not

performed direct/y at the 1.1. input), the dose measuring chamber is not

exposed completely. As a result, the measured dose rate values are lower than the true ones. Indicate this fact under “remarks” in the test certificate.

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

Startup

Cali bration of transfer

0

Place 20 cm (must be maintained exactly!) water phantom in the beam path.

l

Set the source-1.1. distance entered in the mask “Primary FC-Data”/” SID”.

0

Allocate arbitrary organ field with transfer curve COO and select.

For

DR

systems, transfer curve C29 can be selected.

Grid must be moved in

Select zero-point technique Select full format

Fluoroscopy ON using the footswitch or from the spotfilm device Collimate to water phantom; 70 kV must be obtained as radiographic voltage.

+ deviation of 0 EP.

3-13

0

In the case of deviations, read off the corresponding exposure points (EP)

from the graph, kV graduation in integral EP, and enter the values in the

mask “Primary FC-Data” / “Poly-l.l.-Adaption” (3-2).

150 kV

141

133

125

117

109

102

96

90

85

81

77

73

7

66

63

60

57

55

52

50

48

46

44 41

42 40

lllllllll lllllllll l-

0 10

VVW in cm Hz0

llllllllllllllllll

20

30

40

Terminate system programming.

(“Data”/“Restore”,” System”/“Disconnect”)

Reselect zero-point technique and the organ field with COO or C99 for DR

systems.

b.4

.

Fluoroscopy ON Now, 70 kV must be obtained as radiographic voltage.

Curve COO/C29 is provided exclusively for calibration and must not remain

programmed for operation!

Siemens AG

Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

3-14

Startup

Setting the TV iris diaphragm

Note: For technical reasons, “TV irisdia” must be programmed also without in-

stalled TV iris diaphragm. Perform programming without high voltage! SS

“OFF” on 0200.

Basic setting part

no. 37 74 697 X2084 or D270, part no.37 74 192 X2084

Attention: Indications made in [

(only with existing iris) for

] apply to D270 part no. 37 74 792 X2084

D270/D270A

Adjustment for “maximally open diaphragm” with open control circuit (basic diaphragm adjustment)

l

Open jumper B (1 - 2) [X406.B].

l

Open diaphragm with potentiometer R7 [R 4171 until LED V13 [V 4101 (maxi-

mum opening) lights up.

l

Turn R7 in the opposite direction until LED V13 [V 4101 does just not light up any more.

l

Reinsert jumper

l

Select ” System”/“Connect” and confirm with “ok”.

l

Select ” Diagnostics” / “Test” / “General”.

B (1 - 2) [X406.B].

Siemens AG Medical Engineering Group

I

tontomat Drift...

Measure adual lrls value in Volts at D270.Uiris.

rameter 1: posiiion (O...255f. 0 = opened. 255

I

RX63-050.034.07.01.02

Rev. 01

Startup

,,,,,,,,I......

<..-.:...

.:-j,,:I;~::-:I-::;:.-I."sc,

*dion.""'-""---"'.'.'....-.--'-..--..-,..-"'.'.'.,.

3-15

Adjustment for “minimally open diaphragm” with closed control circuit

(basic diaphragm adjustment)

l

Select ‘IT92 “Close Iris” and actuate “Start”

l

With potentiometer R27 [R 4091, close diaphragm until LED V14 [V 4111 (mini-

mum opening) lights up.

l

Turn potentiometer R27 [R 4091 in the opposite direction until LED V14 [V 41 l] does just not light up any more.

Adjustment for “maximally open diaphragm” with closed control circuit (basic diaphragm adjustment)

Select “T91 “Open Iris” and actuate “Start”

With potentiometer R31 [R 4021, open diaphragm until LED V13 [V 4101 (maxi-

mum opening) lights up.

Turn potentiometer R31 [R 4021 in the opposite direction until LED V13 [V 4101

does just not light up any more.

Leave module

Select “Adjustment”/“TV Iris diaphragm”.

tern Data

IJmliguration AdJuslmcnt Diagnostics Info Window

,..

, OFF i$::+';.:i:-'..i ,:

1

. . . . . . . . “:: . j,..... 9” .._.....,

YES I 58

I___

wM~w~;9~:~9m~~ i

j rxr.Mi,,,,co,;c;i;;l .. ; ;

Service hosl switched to ad)uslmcnt

Stat”s

::,,i:f j,:: j..

..'.' .,::... . . . . .:. .:...:.. . . .,., ((,,"<.,. .,.,... '-< ,,,,, I .,,,,,, I,,-,e,L-,'

,. .,_,_,., .:,:,:::.,::::.

::. .: .._ :.:.j...:.. . . . . . .

:...:y: j '.: :+ . . . : :

:. :... . ..:. '..> .::

y i F!??!! .S!!!FEK!!.D2 i

:“,R,S

I:

.-..--.- ..: i 1............................................. . . . . . . . . . . . . . . . . . . . . . . . . . ...!

._-... _..._ -__- _.._......

MClC3WC

,. . . . . . . . . . . . . . . .

Mcasutc D-Signal....

FOR wD,OGRAPH,E . . . . . . . . . . i

@ QPEN 0 CLOSED

i.J.lz?_ 1. _i

.._._ -_

. . . . . . . .

_, _,

. . . . ..A

i:.

Siemens Medical Engineering Group

AG

.;. i.. ._.~.~.~..~.~.~* :.i.:...i .i......i :.....:;;;. ii... __.

RX63-050.034.07.01.02

Rev. 01

3-16

0

.

Startup

l

Measure B-signal values with expanded time base (higher measurement ac-

of one line in the image center (noise center) at the TP8 of the W-PC

bias light portion, see table).

l

FL ON (on PC board D211 in the generator)

l

On the service PC, vary dia

uired B-si

ii 9

-Signal va ues without bias-light or dark current

nal is measure

hragm opening by means of key +/ + until re-

8

B-Signals

Hivicon 1 180 mV + 15/ -15 mV 1

I

110 mV +5/-10 mV

max. dark current 60 mV

20 +

Bias light

1

5mV

110 mV +5/-10 mV* 40 + 5 mV with DFR

20 + 5 mV without DFR

(DG-Saticon [ 130mV +5/-lOmV*I 30 f 5mV

Plumbicon

150 mV . . . 180 mV

I

I I

I

* With high-contrast FL: + 15/ -10 mV

l

After performing the module, leave the system programming (“System’ /“Disconnect”) and check the values set.

Checking the B-signal values

l

increase Cu up to 2.1 mm

l

Select FL characteristic COO.

l

FL on the unit ON, measure B-signal with all 1.1. formats and record it in the IQ

test certificate (53.2.).

Mirror correction

With DR exposures, the iris position to be expected is inquired. From a certain opening (> 60 mm, with SDM > 50 mm), the mirror is moved out automati-

cally and the iris opening becomes smaller.

l

Perform mirror correction also if there is no mirror.

Siemens AG

Medical Engineering Group

km Uata Qmfiguration ~djtrstment Diagnostics !nlo Wandow

: :

~~~..~~~~~....~ li _._.__. :...::..:..::.:.r:;:_ ,__.._.......___~..~.i_...............................’ .__________..................~:

Service - hosl switched lo sdjustmcnl

:: “. . .

‘.:: :: ~:.,Ris.D~~RnoM::i:ii‘-‘~I,:,, :;j.‘y. :i.:- ,::

Plcase START FC!

RX63-050.034.07.01.02

Rev. 01

Startup

3-17

Programming the FL characteristic curves

Normally, two FL curves are used. Depending on the unit, selection of more characteristic curves is possible with

systems in RAS version, e.g. POLYSTAR with three automatic buttons.

If a footswitch with two preps (pressure points) is connected, high-contrast

fluoroscopy is possible with a separate characteristic curve at the 2nd prep.

l

For determining the characteristic curves, please contact the customer and program and record the characteristic curves (in the image quality test certificate 4.2. and in the operating instructions as well).

l

Die Programmierung erfolgt unter “Configuration” / “Unit selection” und “FCDetails” (3-l bis 3-3)

l

Select module JOO.

l

Program the FL curves, as far as provided, for automatic 1 - 4.

Normal fluoroscopy

Recommendation: Preferably program the following characteristic curves:

- Automatic 1: Cl 0

- Automatic 2: CO2

The same dose rate for automatic 1 and automatic 2 (autom. 3 - 4)

1lOkV

90

77

66

57

50

44

40

10 -1

Fig. 1

Application of the characteristic curves:

COl, ClO: C02, C03, Cl 1: Curve with especially high contrast

coo:

Siemens AG

Medical Engineering

Group

1

10 mA

Curve with low exposure to radiation, especially appropriate for pediatrics.

Anti-isowatt curve, as known from the OPTIMATIC-SYSTEM.

RX63-050.034.07.01.02

Rev. 01

3-18

Startup

High-contrast fluoroscopy

A MEGALIX tube assembly with circulation cooling system is required for this

operating mode.lt is selected at the 2nd prep of a 2-step footswitch.

1 Selection of this mode of operation is displayed acoustically, with IZI HC gond

Fi

!a 2

0.1

1 I II 1111

/I I II bill

l

I

1 2 3

I II III1

I

4 10 14 18

I ‘1

mA

The characteristic curves shown in Fig. 2 are stored under numbers C4O....C79.

Application of the characteristic curves C40 : Anti-isowatt curve, as known from the OPTIMATIC SYSTEM

c41 :

Curve with low exposure to radiation

C42 : Curve with especially high contrast Additional curves are stored as follows (for the sake of clarity, they are not drawn

in): C50:4OkV/O.l mA,55kVl0.4mA,85kV!l4mA,ll0kV/9mA C60:4OkV/O.l mA,55kV!0.4mA,85kVfl8mA,ll0kV/l8mA C61: 40 kV/O.l mA, 110 kV/ 18 mA C62:4OkV/O.l mA,50kV/0.4mA,90kV/18mA,110kV/18mA C63:4OkV/O.l mA,50kV/0.4mA,80kV/18mA,110kV!18mA C64:4OkV/O.l mA,60kV/0.2mA,60kV/l8mA,ll0kV/l8mA C65:4OkV/O.l mA,110kV/0.2mA110kV/18mA

Same dose rate for Automatic 1 and Automatic 2 (Automatic 3).

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

Startup

Therapy simulation

l

The tube assembly OPTILIX 150/12/5OC is used for therapy simulation mode

(anode angle 16”). For this tube assembly, 1000 W can be programmed as maximum FL power.

l

Here, the same FL curves as with high-contrast fluoroscopy are used.

Generating separate FL characteristic curves (short description)

l

Positions C8O....C89 can be programmed independently for normal FL,

C9O...C99 for high-contrast FL and therapy simulation.

l

Selection takes place as displayed in the following:

FC-Curves anw;ihlen

Editable FC -Curves [EZPROM):

C85 - not ;Iro&m-nedl

Editable HC/TS-Curves (EPPFIOM]:

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

3-20

Startup

0

After selection of the curve to be programmed,the following mask is displayed:

Enter Name:

,o . . . . :..:_.: ..; ;.:..;..:. j_%. . . . . . . . :.: :::, :.

. . . . . . ..:. .a. .a,. :. .

_: ,__, . . . . . . ..-.

kV

I. :

Test

, 1.: .: .<.. ‘...:..:.: .:. :. ..-..!

voltage:

Current:

. . . ...-.:- . . . . .

r]

v] mA

.-..‘.b. .: .:..:.:...:. .:

kV

._. . I :

:-- ‘.: i .,...

.__.. (. .A. :

. . . . :. A.

.,..,.’

Points of Curve:

kV 1 mA

:

I--

,. : :. !. :. :. .: _>.

.:. .,..:..,._... :.> .:..

4.

0.1

- Designation of the curve

1

0

2 - After selection, mask @ is displayed

0

- For definition of the characteristic, 2 points at least,

3

0

4 - Confirm programming of the respective entry

0

max. 10 points must be entered in ascending order.

The characteristics must be located within the respective range

y

I:.; ::....-.: : .:.

:.

i.;...:. : .-’

1

.

1..

1. ,. j

10 mA11

llOk\

5 -

0

90 85

77

66

40 I

Leave mask with “Cancel”

2 3 4

I I

I

18

mA

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

Startup

l

After programming, the mask displaying the curve and the list of the program-

med points is shown.

3-21

Inter Name:

Test

Points of Curve:

Confirm with “OK” and store (“Data”/“Restore editable...” )

Under “Configuration” / “Unit selection” / “FC-Details”, allocate the characteristic to the automatic stage requested and program. (3-1 to 3-3)

Record the modified or new characteristics also in the operating instructions. The FL characeristics can be printed out via “Data”/“Print”.

Note: Characteristics can also be produced graphically with the mouse.

Select “Insert” and select the points of the characteristics.

Siemens Medical Engineering Group

AG

RX63-050.034.07.01.02

Rev.

01

3-22

Startup

Siemens AG Medical Engineering Group

RX63-050.034.07.01.02

Rev. 01

Transfer curves (O-point technique)

General

POLYMATIC curves (EXP-Curves)

150 kV

133

102

90 81 73

66 60 55

50 46 42 40

0 10

,-

C61

20 30 40

4-1

/

VVW in cm Hz0

General

In the Polymatic system, the object thickness is determined in fluoroscopy. For direct and indirect technique, the exposure parameters are determined on the basis of this value:

Direct technique:

l

Radiographic kV

l

Density corrrection

Memory locations for 99 curves are available. These memory locations are divided as follows:

l

Curves 01...79 are stored in the firmware.

* Curve 00 is a check curve for checking the transfer.

For FLUOROSPOT operation, the curve can be used as C 29..

These characteristics must not be programmed for operation.

* Under the numbers 01...27, constant kV curves are stored in ascending

order (see table) at kV point intervals of 40 kV to 150 kV. They include: small focus, auto focus, no density correction. As delta kV value, the difference to the next higher kV value + 1 kV is entered. These curves are used for all indirect exposure techniques.

Indirect technique

l

Radiographic kV

. Focus

l

Radiographic current

l

Density correction

l

Exposure time

Siemens AG Medizinische Technik

RX63-050.034.07.01.02

Rev.

02

4-2

Transfer curves (O-point technique)

General

* The numbers 31 to 57 include constant kV curves at kV-point intervals of

40.5 kV to 145 kV (see table). The other conditions correspond to curves 01 . ..27.

* For various medical applications, the following curves are programmed

additionally (see page 6-l):

C60: gastrointestinal tract I 85...125 kV C61: thorax 66...125 kV C62: gastrointestinal tract II 70...109 kV C63: gallbladder/kidney 60...70 kV

l

The numbers 80 to 99 are reserved to curves which can be programmed

freely as requested by the customer.

It is possible to use existing curves unchanged or to program separate curves. In the following, generation of the customer-specific curves is described.

The following constant kV curves are filed in memory locations 01 to 27 and 31 to

56:

Characteristic curves

CO1 ............ 40 kV

CO2 ............ 41

CO3 ............ 42

CO4 ............ 44

CO5

CO6 ............ 48

CO7 ............ 50

CO8 ............ 52

............ 46 kV

kV kV kV

kV kV

kV

CO9 ............ 55 kV

Cl0 ............ 57 kV

Cl1 ............ 60kV

Cl2 ............ 63 kV

Cl3 ............ 66 kV

Cl4 ............ 70 kV

Cl5 ............ 73kV

Cl6 ............ 77 kV

Cl7 ............ 81 kV

Cl8 ............ 85 kV

Cl9 ............ 90 kV

C20 C21 C22

............ 96 kV

........... 102 kV

........... 109 kV

C23 ........... 117kV

C24 C25 C26 C27

........... 125 kV

........... 133 kV

........... 141 kV

........... 150 kV

C31 ............ 40.5 kV

C32 ............ 41.5

C33 ............ 43

C34 ............ 45

C35 ............ 47

C36

C37 ............ 51

C38 ............ 53.5

C39 ............ 56

C40 ............ 58.5

............ 49 kV

kV kV kV kV

C41 ............ 61.5 kV

C42 ............ 64.5

C43 ............ 68

C44

C45 ............ 75

C46

C47 ............ 83

C48

C49

C50

C51 ............ 105

C52 ............ 113

C53 ............ 121

C54

C55 ............ 137

C56 ............ 145

............ 71.5 kV

............ 79 kV

............

87.5

93 kV

............ 99 kV

............ 129 kV

kV kV

kV

kV kV kV

kV kV

Siemens AG

Medizinische Technik

RX63-050.034.02.02.02

Rev. 02

Transfer curves (O-point technique)

Generating separate characteristics

l

Separate characteristics can be generated within the memory range 80 to 99.

l

Selection takes place as displayed in the following:

1 EXP-Curves

0

anwahlen

4-3

Edilable EXP - Curves (EPPROM):

I

CR1 - could not be read1 CB2 - could not be read1 Cfl3 - could not be read! CfI4 - could not be read1 CE5 - could not be read1 CEl6 - could nol be read1 CR7 - could not be read! CBII - could nol be read1 ClJ9 - could not be read! C90 - could not be read! C91 - could not be read1

Siemens AG Medizinische Technik

RX63-050.034.07.01.02

Rev. 02

4-4

Transfer curves (O-point technique)

Generating separate characteristics

0

After selection of the characteristic to be programmed, the following mask is displayed:

~

Points of Curve: (PO-> p91

Voltaqe

1 Watervalue I Dens Ad.:

1 -

0

2 -

0

3

0

4,

0

5 -

0

Enter Name: not programmed

Nominal Value: [NPXJ

kV: WW: Dens Ad.:

not programmed

Enter designation of the characteristic Program nominal value (for exposure without previous fluoroscopy) e.g. 60kV for mean water value, e.g. 20 EP (20 cm H20) and confirm with “ok” Select “New Curve” (the display of the NPO values disappears)

Enter data of the characteristic with ascending water value, in each case

confirm with “ok”.

6 -

0

Siemens Medizinische Technik

AG

Terminate programming

, Voltage: _ Watetvalue:

6

r] kV [zo ) BP

Points 01 Curve: (PO-> PS]

Voltage f Watervalue I Dens Ad.:

RX63-050.034.02.02.02

Rev. 02

Transfer curves (O-point technique)

l

After programming, the mask displaying the characteristic and the list of the

programmed points is shown.

Enter Name: test

Points of Curve: [PO-> PS)

Ei

FOCUS

@I r&j,;

I..

Focus Switching 1

@ Eix Focus

0 Auto Focus

Delta k’j: (i!]

0

Small

Voltage 1 Watervalue 1 Dens Ad.:

“PO: 42.OkV! 1 BP I D.A. -1 .O ‘Pl: 60.2kV 18 BP i D.A. -0.5 NP2: 60.2kV 1 20 BP / D.A. to.0 “P3: 60.2kV I30 BP / D.A. to.5 *~4: i 24.8kv I 40 BP I D.A. ti

4-5

.o

l

Program focus: with ” Autofocus”,

enter switchover from small to large focus

(Delta kV, default 0).

l

Confirm with “OK” and store.

Assignment of curves to organ buttons

With the following sequence, the curves are assigned (see also operating

instructions Polydoros SX 50180 /Part 4: Appendix):

l

Select the program menu and press the key button.

l

Select exposure technique at the unit (direct technique or Sircam).

l

Select corresponding organ button.

0

“O-point technique” ON.

l

Using the+/- button, select the desired transfer curve in the message line.

l

If the focus contained in the curve is not to be used, select the desired focus

(when both foci light up, autofocus is selected).

l

If necessary, enter density correction with 0 button.

l

Store with memory button.

l

Turn off programming unit with the key button.

Siemens AG

Medizinische Technik

RX63-050.034.02.02.02

Rev. 02

Transfer curves (O-point technique)

Protocol

Record the modified or new characteristics also in the operating instructions

EXPOSURE-CURVES C8O...C99:

NAME

FOCUS (L/S)

FIXFOCUS (F) /AUTOFOCUS

NOMINALVALUE NPO, DENSAD NPO: . . .

Pl...PlO

(A) +AKV: . . .

kV

150

141

133 125

117 109

102

96

90 85 81 77

73 70

66 63 60

57 55 52

50 48 46----------T---------,---------T---------44

42

41

40

0 5

I I

I

I I

I

I I

I

I I

I

I I

I !

I I

I

I I

I

l

I

I I

I

.

I I

10

15

I I

I

I I

I

I I

I

!

I I

I

!

I I

I

I I

I

.

I I

I

I I

I

I I

I

!

I I

I

I I

I

I I

I ___

I

1

I I

20 25 30 35

-16

40

26

24

22

20

18

14

12

10

8

6

4

2

0

kVBP

Siemens AG

Medizinische Technik

WW in cm Hz0

RX63-050.034.07.01.02

Rev. 02

Optionen

l

Select ““Configuration” / ” Options”.

5-l

3

0

4

0

5

0

6

0

I

1

0

[Transparency adaptlon In lontomat Made-P-------

-1ransparc”cy adapliun io mAs Mude

0 Iransparcncy adaplicn tescl when changing rhc

I-

2

0

0 lndlcatlon of the shortest possible switching time in Z-point technique

-I$ - slcpplng 0 1 exposure polnl

-SwItchbag on of Opolnt tcchniquc with direct [adiogrsphy @ wilh O-point key only

Switching on of Dpoinl technique with SIRCAM

O-point key only

-&tth O-point technique 0 cxposurc blocking witout FC

-Entry of dose I doscratc values in:

Seled Sclcd Defaultsystem EUTlON 11 Program 51 [only for dctault-unit: No.f1..25]: for KK) jDlrcn 71 1 1 6.

0

via kV and Density

@ only via mAs

Organ Program

0 112 exposure point

0

@ cxposurc data from nominal value of IIXP-C~~~~

0

via kV and mAs

with O-Pt key and Organproglamdla”ge

kev and Ornanoroorsmchanoe

with fl-Pt

1

0 0

0

5

0

6

0

Siemens AG

Medizinische Technik

Default organ program (and default radiographic system) with generator “ON”?

Transparency compensation is reset with change of the organ program

2

With direct radiography: O-point technique with organ change, O-point button can

3

4

With SI RCAM: O-point technique with organ change, O-point button can be

With O-point technique, no exposure data without fluoroscopy

(exposure blocking)! Exposure data from mean water value (nominal value) of the radiographic curve

Input of the dose/dose rate values in pR/ pR/s Input in nGy/ nGy/s

be actuated Can only be switched on with O-point button

actuated Can only be switched on with O-point button

RX63-050.034.07.02.02

Rev. 01

5-2

1’12 13 14 15 I

6

11 1 16 1 17 1 18 1 19 I 1 21 1 22 I 23 I 24 1 25 1

7

12

8

13 14

9 10

15 20 1

Programming

MODULE “DEFAULT PROGRAM”:

DEFAULT PROGRAM

ORGAN-NO: . . ~ .

RADIOGRAPHY

I

SIRCAM

Protocol

DSA

Siemens AG

Medizinische Technik

RX63-050.034.07.02.02

Rev. 01

Error notes

6-1

Error:

“Adjustment”/ “Doserate ” cannot be selected.

Causes: 0

l

Error:

Causes:

BP difference in dose adjustment

l

“Configuration” not programmed completely

D90l defective

No MPL signal

l

No MPL supply voltage

l

Jumpers on D901 incorrect

l

D901 defective

l

No light at the image intensifier output

Error: Causes:

Too high derivation kV with zero-point technique

l

Grid programming incorrect

Too high drift or hum values

l

Incorrect connection of multiplier to base

l

Shielding of MPL cable defective

RXE 33IAuernhammer TD RX 5/Hofmann TDRX 1 /Biedermann TDU G/Kundler

Siemens AG

Medizinische Technik

RX63-050.034.07.01.02

Rev.

01

Siemens Polydoros SX 50, 80 Service manual [gb]