89
3.10 Dark Noise
Chapter 3
3.10.5 Performance Criteria and Corrective Action
Performance Criteria: The acquired image on Dark Noise 1 and Dark Noise 2 should display an S value of 5000.
Corrective Action: Ensure the ROI has not been inadvertently moved out of the image area. The ROI should be cov-
ering the entire plate and can be moved by the end user to correct.
If results exceed the criteria the REGIUS system will need to have service to address the issue.
The source of the problem shall be identied and corrective action shall be taken before further patient imaging is
performed.
3.10.6 Documentation
Record the results in the Table MP-7 (Dark Noise) and the Table MP-S (MEDICAL PHYSICIST'S MAMMOGRAPHY
QC TEST SUMMARY).
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