Siemens MAMMOMAT Novation DR - Check the H & D Dose Settings for Mo;Rh and W;Rh

Checking dose settings 8 - 7
Siemens AG SPB7-250.815.02 Page 7 of 10 MAMMOMAT Novation
DR
Medical Solutions Rev. 02 09.04 CS SD 24 System
Check the H & D dose settings for Mo/Rh and W/Rh. 8
If the Mo/Mo AEC does values for H & D are within the specification, proceed as follows:
1. Mount the Collimator Mounted Plexi Phantom.
2. Select the appropriate exposure parameters according to the table and start an
exposure.
3. Select the anode/filter combination according to the table and set the mAs (control
console) as close as possible to the H & D mAs values (Mo/Mo) that you have
measured in step 2.
Display the image with the
syngo Image Viewer. To do so click on the Viewing
tabcard, load the image with the Patient -> Browser and select Tools -> Rect-
angle. Draw an area of approximately 1 sq.cm and measure the pixel mean
value.
Add the result to the table.
The Mo/Rh and W/Rh pixel values must be as close as possible to the Mo/Mo
pixel values (see table at step 2).
The deviation must not exceed +/- 20 %.
4. If the H & D dose settings have to be adjusted, proceed with Chapter 8 "Adjust the
H and D Settings" and repeat the H & D dose checks for Mo/Rh and W/Rh again.
5. Record the measured values in the "Startup Protocol" on Page 11 - 1 .
Anode /
Filter
AEC kV Pixel value
Mo/Rh
H28 kV
D28 kV
W/Rh
H28 kV
D28 kV
Tab. 2 Checking the H & D dose settings for Mo/Rh and W/Rh
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