Constancy Test Of The Monitor - Siemens SOMATOM Spirit Operator's Manual

CHAPTER
F.6
Image quality of the monitor
04/2012
Constancy Test of the
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Monitor
Monitors are subjected to a constancy test to ensure that the
image quality and measured values lie within a defined range.
Constancy test requirements for image display devices (moni-
tors) may vary according to different national regulations.
The constancy test described herein complies with the German
X-ray regulations (Deutsche Roentgenverordnung) and is based
on requirements given in DIN V 6868-57.
i
We recommend that the constancy test and collection of the ref-
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erence values is performed and documented by authorized per-
sonnel.
The acceptance test performed during initial start up commis-
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sioning ensures optimum image quality of the device. The
results of these measurements are documented in an accep-
tance test report and serve as reference values for the follow-up
constancy test.
B
If any alterations are made to the device that affect the image
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quality, for example, repairs, replacement of parts, or readjust-
ments, the acceptance test according to the Germany X-ray reg-
ulations must be repeated.
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