Siemens MAMMOMAT Novation DR - Page 52

52 Collimator Adjustment
MAMMOMAT Novation DR SPB7-250.815.06.02.02 Siemens AG
12.05 CS SD 24
Page 52 of 116
Medical Solutions
13. Repeat the procedure for all focus & anode combinations until all white lines at the im-
age edges are gone.
14. Save the calibration and Exit from the service software.
NOTE
If you see a white thin line on the chest wall when using the mag-
nification table, it might be the magnification table itself. Pull the
magnification table out by approximately 1 mm and try again.
P 15. Record the measured values in the "Start-up Protocol" on (Start-up Protocol / p. 97).
Collimator field light calibration
Calibration for the field light is carried out as follows:
1. Select the detector wing. dr is then displayed on the control console.
2. Start the service software on the service PC and select:
Configuration -> Collimator -> Calibration of light field
Fig. 34: Collimator light calibration
3. Position the X-ray cross in the center of the detector.
4. Make sure that a patient is registered.
5. Mount the Collimator Mounted Phantom.
6. Mount the compression simulator.
7. Deselect H and D on the control console by selecting 25 kV and 50 mAs on the control
console.
X 8. Start an exposure.
9. Compare the image with the reading of the X-ray cross on the detector when the light
field is turned on.
10. Adjust the difference with the service software.
11. Continue with Step 7 until the beam field and light field are identical.
12. Save the calibration and Exit the service software.