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
1 Attach tape (1) along the object table sides.
2 Position and attach 4 washers (2) with glue on the tape as shown in Figure 2.
Figure 2 Object table
3 Insert a cassette with a centered film and make an exposure. Save the film as refer-
ence.
4 Measure and note down distances a and b between 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.