Which of the following mammography quality control tests is performed as needed?

The repeat analysis is a quality control test in mammography that is performed as needed based on the examination results. This assessment involves reviewing cases where images are repeated due to quality concerns, such as poor positioning or inadequate technique. The goal is to gather data to identify trends that could indicate a systematic problem with imaging practices or equipment, thus improving overall image quality and patient safety.

Unlike routine quality control tests that are performed at scheduled intervals, the repeat analysis is triggered by actual occurrences of repeated images, making it a reactive rather than proactive measure. This distinguishes it from other options that adhere to a more systematic schedule. For example, image quality assessments and calibration checks are typically performed on a regular basis to ensure ongoing compliance with quality standards, while routine maintenance is part of a regular upkeep schedule for equipment. Thus, repeat analysis specifically responds to identified issues as they arise, highlighting the importance of addressing quality control dynamically in a clinical setting.