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Siemens AG SPR2-310.662.01 Page 1 of 10 ARCADIS Varic
Medical Solutions Rev. 02 05.06 CS PS SP
Function tests 5
1 Checking the accuracy of the tube voltage 5
The actual kV value must agree with the indicated value within the limits stated by
Siemens (max. deviation
&10 % for the ARCADIS Varic), if the X-ray system is connected
to a power supply corresponding to Siemens specifications.
Tools: PTW-Nomex
Test procedure:
Refer to the information on the Nomex in the operating instructions
Connect the Nomex.
Remove the single-tank cap at the SIREPHOS after removing the two screws.
Select full image intensifier format and open the collimator fully.
Place the measuring detector on the diaphragm.
Set the following values in the operating field and check
2 Reproducibility 5
The coefficient of variation must not exceed 0.05 when the X-ray system is connected to a
power supply as specified by Siemens.
The technique factors should be adjusted to alternate settings and reset to the test setting
after each measurement.
2.1 Measurement set-up 5
Place the dosimeter in the center of the X-ray beam.
Before each new dose measurement, make sure that the indicator is reset to zero.
Operating mode Indicated Measured Tolerance
Fluoroscopy 70 kV 63 kV to 77 kV
Fluoroscopy 101 kV 91 kV to 110 kV
Fluoroscopy 110 kV 100 kV to 120 kV
Radiation 102 kV 92 kV to 110 kV
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