MAMMOMAT
Novation
DR
SPB7-250.815.02
Page 4 of 6
Siemens AG
System
Rev. 02
09.04
CS SD 24
Medical Solutions
7 - 4
Collimator Adjustment
10.
Check if the while lines at the edges of the image are gone, using a magnification
of 4 in the application GUI.
11.
Repeat the procedure for all foci, until all white lines at the image edges are gone.
12.
Save
the calibration and
Exit
from the Service Software.
Collimator field light calibration
7
Calibration for the field light is carried out as follows:
1.
Start calibration from the Service PC.
Configuration -> Collimator -> Calibration of light field
2.
Position the X-ray cross in the center of the detector.
3.
Make sure that a patient is registered.
4.
Mount the Collimator Mounted Phantom.
5.
Mount the compression simulator.
6.
Deselect
H
and
D
on the control console by selecting 25 kV and 50 mAs on the
control console.
7.
Start an exposure.
8.
Compare the image with the reading of the X-ray cross on the detector when the
light field is turned on.
9.
Adjust the difference with the Service Software.
If you see a white thin line on the chest wall when using the mag-
nification table, it might me the magnification table itself.
Pull the magnification table out, by approximately 1 mm and try
again.
NOTE
Fig. 3
Collimator light calibration