X-ray tube checks 6 - 3
Siemens AG SPB7-250.815.02 Page 3 of 6 MAMMOMAT
Novation
DR
Medical Solutions Rev. 02 09.04 CS SD 24 System
Checks with a large focus and without AEC 6
Prerequisites
• Deselect D and H on the control console, the MAMMOMAT is in mAs mode without AEC.
• Make sure the magnification table is removed, so that a large focus is selected.
• The check has to be performed for each measurement of the table.
• Cover the detector with the large steel plate or with a lead apron.
Test performance
1. Adjust the exposure value on the control console according to the table above.
2. Start an exposure.
3. Check and measure the kV value and the tube current characteristic on the
oscilloscope.
The accuracy of the kV is &5%, for tube current &10% and for the mAs product
&10%.
4. Record the measured kV and mAs value in the "Startup Protocol" on Page 11 - 1
.
5. Change the setting and continue with the next measurement until you have
completed all measurements from the table above.
Measurement kV mAs Anode/Filter
13020Mo/Mo
23020W/Rh
3 35 100 Mo/Mo
4 35 100 W/Rh
5 25 100 Mo/Mo
6 25 100 W/Rh
Tab. 1 Checks with a large focus and without AEC
"
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