Siemens MAMMOMAT 3000 User manual

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
Collimator holder 0-1
Page Rev
1Prerequisites 1-1 01
Foreword 1-1
Tools required 1-1
Parts included 1-1
2Modification of collimator holder 2-1 01
Registration of radiation field 2-1
Table over registration of radiation field 2-2
Installation of measuring tools 2-3
Work-up of holes 2-4
Checks and adjustments 2-6
Table of contents, Revision status

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
0-2 Collimator holder
Table of contents, Revision status

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
Prerequisites 1-1
Foreword
The purpose of this modification is to enable centering of the radiation field.
Tools required
•Standard assembly tools
•Electric drilling machine with Ø 6.8 mm drill
•Tape
•4 Washers
Parts included
The upgrade kit, part no. 63 82 866, includes the following parts:
Nr Qty Part Part No.
1 1 Measuring tool 63 69 834
2 1 Measuring tool 63 69 842
3 2 Wedge 63 69 867
4 2 Clamp 63 82 563
5 2 Screw 60 32 320
6 4 Screw 60 23 469
7 4 Washer 60 56 535
8 8 Cable tie 90 11 370
9 5 Cable tie 62 21 753
10 2 Plastic bag 62 86 319

Siemens-Elema AB SRX-MK RX B7-120.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
1-2 Prerequisites
Figure 1 Upgrade kit

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
Modification of collimator holder 2-1
Registration of radiation field
1Attach tape (1) along the object table sides.
2Position and attach 4 washers (2) with glue on the tape as shown in Figure 2.
Figure 2 Object table
3Insert a cassette with a centered film and make an exposure. Save the film as refer-
ence.
4Measure and note down distancesaand bbetween the washers and the white borders
on the film (six distances in total).
NOTE!
Use the table over registration of radiation field to record measured values.

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
2-2 Modification of collimator holder
Table over registration of radiation field
AMeasured distances on exposed film between attached washers and white borders.
BMeasured width of white borders on exposed film.
CMeasured distances from collimator holder to tube plate (x-axis) and mounted meas-
uring tool (y-axis).
Date:.....................
Site nr:..................
Serial nr: ..............
Remark AB C
1 2 3 4 White
border Distance x-axis Distance y-axis
Film
Nr ababbbLeft Right Left Right Left Right
Reference before
loosening

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
Modification of collimator holder 2-3
Installation of measuring tools
1Put the left/right measuring tool (1) on left/right side of the collimator holder (2) and
secure at the upper edge by means of the wedge (3).
2Put the clamp (4) with screw (5) over the collimator holder and measuring tool, lock
with the screw against the measuring tool.
3Measure free space (Y-axis) on both sides between measuring tool and the side wall
of collimator cover (6).
4Measure free space (X-axis) on both sides between the collimator holder and tube
plate.
Figure 3 Installation of measuring tools
NOTE!
Use the table over registration of radiation field to record measured values.

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
2-4 Modification of collimator holder
Work-up of holes
1Remove collimator protective cover by unscrewing four Allen screws.
Figure 4 Removal of collimator protective cover
2Disconnect cables X866, X867 and X890 from the collimator and cut off the cable
ties. Notice the connector and cable-tie positions to ensure the same positioning after
work-up.
3Unscrew the four Allen screws holding the collimator with holder.
Figure 5 Removal of collimator holder
4Fold down the collimator with holder and secure with a cable tie to prevent it from
hanging in the cables.
5Cover the collimator with a plastic bag. Protect other parts of the Mammomat with a
plastic cover.

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
Modification of collimator holder 2-5
6Use an electric drilling machine and Ø 6.8 mm drill to work up all four holes for the
collimator holder.
7If necessary, use a file to deburr.
Figure 6 Work-up of holes
CAUTION!
Be careful not to damage any parts during drilling operation or let any drillings or filings
fall down on electrical or mechanical parts.
8Remove plastic bag and plastic cover carefully. Vacuum-clean the stand to remove
any filings/drillings.
9Remove the cable tie that holds the collimator in hanging position.
10 Install the collimator with the four new Allen screws and washers.
11 Reconnect the cables and secure with new cable ties in the same way as previously.
12 Install the collimator protective cover.
13 Check that the cable-tie heads inside the protective cover are pointing upwards.
CAUTION!
Cable-tie heads pointing in wrong direction can prevent motion of internal diaphragm
near end position caused by contact with the collimator protective cover.

Siemens-Elema AB SRX-MK RX B7-230.092.01.01.02 MAMMOMAT 3000
Solna, Sweden REV.01 10.95 Collimator holder
2-6 Modification of collimator holder
Checks and adjustments
1Adjust the collimator for desired position, see Figure 2 and Figure 3, by loosening
the four Allen screws and carefully displacing it. Check against free space X-axis and
Y-axis.
2Tighten the Allen screws.
3Release an exposure.
4Compare the white borders on the film with those on the film exposed before work-
up. Adjust if necessary.