GE Advantx, Sentry User Manual

Technical

Publications

GE

Medical

Systems

0

Direction

Revision

Advantx@ Sentry..

46-019403

1

TI

ree

Automatic Collimator Operation

Models

46-194755G2

46-177099G1946-194750G1,

46-194765G1

46-177098G1, 46-194755G1,

or

46-233718G1;

and

46-194750G3,

or

46-233717Gl

Product

Copyright@

1989

1991

By

General

Electric

Co

Operating

Documentabon

Direction

46-019403

Revision

1

Advantx@ Sentry- Three

Automatic Collimator Operation

Models

46-177099G1, 46-19475OG1, 46-19475OG3, 46-194765Gl

46-177098G1, 46-19475561, 46-194755G2

or

46-23371861,

or

46-233717Gl

and

IMPORTANT!

X-ray equipment if not properly used may cause injury Accord ingly, the instructions herein contained should be thoroughly

read and understood before you

attempt to place this equipment

in

operation The General Elec

tric Company, Medical Systems

Group, will be glad to assist cooperate in placing this equip ment

in

use

Although this apparatus incorpo rates a high degree against x useful beam no practical design

of

plete protection Nor can any practical design compel the

-

radiation other than the

equipment can provide com

of

protection

rn

and

op-

X-RAY

rn

erator to take adequate precau

tions to prevent the possibility of

any persons carelessly, unwisely, or unknowingly exposing them selves or others to radiation

-

is

important that everyone hav

It

ing anything to do with x-radiation be properly trained and fully ac quainted with the recommenda

tions

of

the National Council on Radiation Protection and Measure ments ports available from NCRP Publica tions, Room

20814,

Commission on Radiation Protec

as

published in NCRP Re

7910

101

6

and

PROTECTION

Woodmont Avenue,

Bethesda Maryland

of

the International

tion, and take adequate steps to

insure protection against injury

All

-

persons authorized to use the equipment must be cognizant the danger to x

-

radiation and the equipment

sold with the understanding that

the General Electric Company

Medical Systems Group agents and representatives have no responsibility for injury or dam age which may result from expo sure to x-radiation

Various protective material and devices are available that such materials or devices be used

of

excessive exposure

It

is urged

of

is

its

-

*

GE MEDICAL SYSTEMS

REV

1

AUTOMATIC COLLIMATOR OPERATION

ADVANTX SENTRY THREE

DIRECTION

46-01

9403

SECTION

TABLE

OF

CONTENTS

TITLE

REVISION HISTORY COLLIMATOR CONTROLS AND INDICATORS OPERATION

OF

CASSETTE SIZE SENSING TRAY COLLIMATOR MODE OF OPERATION CONDITIONS FOR MODES

OF

OPERATION OPERATING PROCEDURES PRODUCT SPECIFICATIONS

X

RAY TUBE UNIT HOUSING COMPATIBILITY SERVICE PMS DATA RECORD

PAGE

111

1

5

7

8

9

14 15

16

17

1/11

(Blank)

.

GE MEDICAL SYSTEMS

REV

1

ADVANTX SENTRY

AUTOMATIC COLLIMATOR OPERATION

DIRECTION 46-

THREE

01 9403

REV

0

1

PAGE REVISION

NUMBER NUMBER

Title Page

X

Ray

Protection 1

I

I1

111

dnd

iv

Dec

Feb

DATE

11

1989

22

1991

1

Blank

1

REVISION

REASON FOR CHANGE

The predecessor to this manual,

systems systems

Add

ments wth inherent filtration General revisions

Thiq

new direction based upon

mist gray models Clarify that collimator meets all regulatory require-

LIST

OF

EFFECTIVE PAGES

PAGE

NUMBER

HISTORY

OM

D5303C

OM

REVISION PAGE

NUMBER NUMBER

was

used for pre-Advantx

5303C

is

written

REVISION

NUMBER

for

Advantx

a

1

thru

21

1

111

GE MEDICAL SYSTEMS

REV

1

ADVANTX SENTRY THREE

AUTOMATIC COLLIMATOR OPERATION

DIRECTION

46-01 9403

.

ILLUSTRATION

COLLIMATOR CONTROLS AND INDICATORS

15

1

A4

A5

A’

SAMPLE

LABEL

1

r

3A

1v

GE MEDICAL SYSTEMS

REV

1

ADVANTX SENTRY THREE

AUTOMATIC COLLIMATOR OPERATION

DIRECTION

46-01

9403

0

SECTION COLLIMATOR CONTROLS AND INDICATORS

1

Left thumbwheel prowdes for manual adjustment of longtudinal field size

(left to right dimension as

to increase field size Upper pointer shows transverse field size, lower pointer shows longtudinal

field size Field size scale selector

SID,

44 48

use

wth

15"

target tubes One has

other

100

cm, 110 cm

at the time the equipment a Anode cut off warning label (location shown) indicates anode cut off

point at SID

sion on the longtudinal axls) This applies to 10"

tube targets

Right thumbwheel provides for manual adjustment

(front to back dimension as viewed from front of collimator) Rotate upward

to increase field size

Reduction on off button manual reduction of field size while operating in the automatic mode (the

on' position) Depress the button a second time to restore

(the

off

position) Replacing a cassette performs the same function as de

pressing the button a second time The amber light flashes when in the

position

60

s

wewed from front

-

Rotate thumbwheel to select scale for the desired

or

72" Two other scale combinations are furnished

40 48

120

cm and 150 cm scales Choice should be made

I

S

installed

of

44'

or

less using a

-

After selecting

of

collimator) Rotate upward

60

'

and

72

"

14

"

x

17" cassette (wth 17 ' dimen

11 O and some 12

of

transverse field size

SID

depress momentarily

orignal field size

for

scales and the

5'

to

permit

on

Key

Swtch - Has three positions

NORMAL

a

OVERRIDE

b

OVERRIDE

c

See Section

NON AUTO Indicator

is in the manual mode It flashes when the REDUCTION is in the on position

Swtch marked AUX tube suspensions REO and must be depressed to couple the dewce It is most important that this swtch

This swtch has a push-push type action That is the first push activates and holds swtch in position, and the second push deactivates and releases swtch

See Notes

-

For

normal operation

1

-

For

use

when there

2

-

For

use when the collimator shutters

5

F

-

The amber light is steady

-

May be used

havlng a vertical stereoshifter, this swtch

is

released when stereo work is completed

1

and 2

of

the collimator

is

a cassette size sensing malfunction

for

control

do

not respond

on

when the collimator

ON

OFF

of

compatible options On

is

marked STE

button

1

GE MEDICAL SYSTEMS

REV

1

ADVANTX SENTRY THREE

AUTOMATIC COLLIMATOR OPERATION

DIRECTION

46-01

9403

.

Swtch marked DETENT - Depress when

9

tion at a specific point usually when the focal spot is transversely centered

wth the table top and when the SID beam vertical is

on tube hangers only and applies only when the transverse and vertical locks

On

are released spare

This swtch has a push

See Notes 1 and

10

Swtch marked trical angulation lock

late the tube unit about its angulation lock this

swtch has a momentary

This depressed

See Notes

Swtch marked VERT - Depress when movlng the tube unit vertically

11

This swtch has a momentary type action (as described in Item

See Notes 1 and

to

1

equipment not havlng electrical detents

-

push type action (as described in Item

2

ANG

-

Applicable to tube hangers and stands hawng an elec

on

the tube support Depress when

short ams

swtch

obtain the function described

and

2

IS

a spare

type

it

is desired

On

equipment wthout an electrical

action That

to

stop transverse mo

40

This feature is

this swtch is a

8)

it

is desired to angu

is

the swtch must be held

10)

e

Note

Swtches marked

12

moving

ond time to apply the locks (button out) lock be applied to maintain the proper SID x ray beam horizontal

These

See Notes 1 and

1

2

Items Collimators for VRT Tables have different actions and different legends

than described here

limators see Direction

rection ating Manual)

Items

tor for

the tube unit long~tudinally

swtches have a push-push action (as described

8,

9 10

46-017201

8

9

10

HydradjUSt Table

11

LONG

2

and

For

46-017090

(VRT

and

12

and TRANS - Depress to release the locks when

or

transversely (laterally) Depress a sec

It

is

important that the longtudinal

in

item

8)

12

for Models

description

I1

Radiographic and Tomographic Table Oper

are not present

46 23371761

of

these swtches on the VRT Col

(VRT Table Operating Manual)

on

Model

and

46 23371861

46 19476561

Collima

or

Di

a

-

2

GE MEDICAL

REV

1

SYSTEMS

ADVANTX SENTRY THREE

AUTOMATIC COLLIMATOR

DIRECTION

OPERATION

46-01

9403

e

ILLUSTRATION

2

18-

//

li

Note

EXP

13

14

15

The collimator meets all regulatory requirements tion The removable filtration (described above)

corporated in the Sentry collimator as a user option that are interested in additional dose sawngs through additional hardening

of

wll

HOLD

improper positioning of some element of the system such as the tube unit

Bucky stand

FIELD LIGHT

lates the x ray field at any gven collimator setting The light

seconds Time interval may be reduced by a senweman

Slot

for

a Model

46 23371761

added

the x-ray beam

decrease slightly

b Model

Mammography Collimator For technics below until way in a safety interlock prevents exposures about

is not fully inserted

Indicator - Red light

button - Depress momentarily

added filters

46 17709961 46 19475061, 46-19475063, 46 19476561

46 17709861 46 19475561 46-19475562

it

hits the stop

-

Collimator Extra Filtration of

As

additional aluminum filtration is added, contrast

For technics above

on

indicates x ray lockout because of

to

obtain a light

1

2

wth the inherent filtra

IS

a feature that was in

It

is prowded

49

kVp, pull the filter out

49

kVp push the filter all the

or

field

wll

stay on

if

so

desired

3

mm

or

46 23371861

49

kVp

that simu

30 60

AI

may be

for

sites

if

the filter

or

3