Which of the following is commonly a QC activity in PACS?

• A. Display calibration checks
• B. User login attempt blocking
• C. Printer ink level monitoring
• D. Scheduling patient appointments

Answer: (A)

In PACS, quality control is about making sure images are displayed and interpreted accurately. Display calibration checks are essential because they verify that monitors reproduce luminance, contrast, and grayscale in a way that matches the standardized DICOM grayscale display function. Regular calibration helps ensure subtle image details aren’t lost or misrepresented, which is crucial for reliable diagnosis.

The other tasks aren’t QA activities for PACS imaging quality: blocking user login attempts deals with security and access control; monitoring printer ink relates to hardware maintenance of printers rather than image display quality; and scheduling patient appointments is an administrative workflow function. Therefore, display calibration checks are the typical QC activity in a PACS environment.