Appendix 12 - 3
Siemens AG SPB7-250.815.02 Page 3 of 8 MAMMOMAT
Novation
DR
Medical Solutions Rev. 02 09.04 CS SD 24 System
Structured Artifacts
Problem Cause Recommended Action
Appearance of 24 “256
blocks” of different
Densities or Counts
Gain calibration not turned on.
Detector not calibrated properly.
Follow calibration procedure.
Image not appearing in
One or More “256
blocks”
Detector defective. Detector might have to be replaced
contact the Service Center.
Image not appearing in
one or more quarters
of Detector
Detector defective. Detector might have to be replaced
contact the Service Center.
Garbled, scrambled, or
truncated (from edges
of long axis in) images
Poor cable connection.
Electronic interference with or along
cable.
Check pins and Detector connection
to PXCM.
Identify and isolate sources of inter-
ference; examine the cable pathway.
Fine Linear Pattern,
Parallel to Long Axis,
in One or More “256
Blocks” (usually more
pronounced on an
edge)
Electromagnetic noise interfering
with Detector Read Out.
Shield Motors, power sources, and
so on, located in proximity to the
detector.
Other Artifacts
Problem Cause Recommended Action
White lines towards the
center of panel (Bar
Code)
Detector defective. Detector might have to be replaced
contact the Service Center.
Dark lines / weak lines Lines need to be mapped out. Contact the Service Center.
Poor image quality Detector not calibrated to optimal
operating temperature.
Allow proper warm-up time to nor-
mal operational temperature.
Distorted image with
256 blocks
Detector defective. Detector might have to be replaced
contact the Service Center.
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