Siemens MAMMOMAT Novation DR - Page 109

Siemens AG SPB7-250.815.06.02.02 MAMMOMAT Novation DR
12.05 CS SD 24
Appendix 109
Page 109 of 116
Medical Solutions
Line Artifacts
Problem Cause Recommended Action
Line Parallel to the
Short Axis
Seam:
• Seam correction algorithm not
turned on; wrong algorithm se-
lected.
• 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 pro-
cedure (refer to "Gain calibration"
on (Gain calibration / p. 72).
• Perform detector calibration pro-
cedure (refer to "Gain calibration"
on (Gain calibration / p. 72)).
• Perform the bad pixel correction. (
Refer to "Creation of new pixel
map" on (Creation of a new pixel
map (if necessary) / p. 76)).
Line Parallel to the
Long Axis
Line ends at seam or line partially
defective (gate lines).Line ends at
seam or line partially defective (gate
lines).
• Detector not calibrated properly.
• line needs to be mapped out.
• Perform detector calibration pro-
cedure (refer to "Gain calibration"
on (Gain calibration / p. 72)).
• Perform the bad pixel correction. (
Refer to "Creation of new pixel
map" on (Creation of a new pixel
map (if necessary) / p. 76)).
Line Runs Through
Seam
• Read out problem; HV setting
time too short.
• Hard copy device or processor
artifact.
• Follow applicable problem solving.