Citation:
900.12(e)(5)(v): Breast entrance air kerma and AEC reproducibility. The coefficient of variation for both air kerma and mAs shall not exceed 0.05.
Discussion
No. Because the AEC detectors are also being evaluated as part of the AEC performance test, only a single detector per bucky needs to be tested by the medical physicist. Units that have different AEC detectors in different buckys (e.g., different AEC detectors for the different size cassette holders) will need to have one detector in each bucky tested for reproducibility.
No. The medical physicist can limit AEC reproducibility testing to the AEC mode used most commonly for the standard breast.
Key Words:
Related Topics:
Annual Equipment Quality Control Tests
Automatic Exposure Control (AEC)
Automatic Exposure Control (AEC) Annual Quality Control Test