Siemens MAMMOMAT Novation DR, Installation Manual, Page: 96 / 104

MAMMOMAT Novation
DR
SPB7-250.815.02 Page 2 of 8 Siemens AG
System Rev. 02 09.04 CS SD 24 Medical Solutions
12 - 2 Appendix
The following tables provide direction for cause and corrective action for those artifacts
that have been validated as coming from various components.
Line Artifacts
Problem Cause Recommended Action
Line Parallel to the
Short Axis Seam:
•
Seam correction algorithm not
turned on; wrong algorithm
selected.
•
Detector gain not calibrated
properly.
•
Seam (lines 1535 and 1536)
needs to be mapped out.
Source lines:
•
detector not calibrated properly.
•
Line needs to be mapped out.
•
Perform detector calibration
procedure (refer to "Calibration of
detector" on Page 9 - 8).
•
Perform detector calibration
procedure (refer to "Calibration of
detector" on Page 9 - 8).
•
Perform the bad pixel correction. (
refer to "Creation of new pixel
map" on Page 9 - 14)
Line Parallel to the
Long Axis Line ends at seam or line partially
defective (gate lines).
•
Detector not calibrated properly.
•
Line needs to be mapped out.
•
Perform detector calibration
procedure (refer to "Calibration of
detector" on Page 9 - 8).
•
Perform the bad pixel correction. (
refer to "Creation of new pixel
map" on Page 9 - 14
Line Runs Through
Seam
•
Read out problem; HV setting time
too short.
•
Hard copy device or processor
artifact.
•
Follow applicable problem solving.
Random Artifacts
Problem Cause Recommended Action
Increase in Defective
Pixels and Lines Defective pixel file requires updat-
ing.
•
Perform the bad pixel correction. (
refer to "Creation of new pixel
map" on Page 9 - 14)