Which of the following records of QC tests must be maintained?

• A. 1 and 2
• B. 1 and 3
• C. 2 and 3
• D. 1, 2, and 3

Answer: (D)

Maintaining a complete QC record history is essential because it provides a traceable trail of how the imaging system has performed over time, allows spotting trends, and demonstrates compliance with safety and quality standards. All three kinds of QC documentation should be kept: acceptance testing, which establishes the baseline performance before clinical use; routine ongoing QC checks, which monitor consistency and catch drift; and maintenance or repair records, which document actions taken and help verify that issues were resolved and reflected in subsequent tests. Together, these records support regulatory audits, accountability, and patient safety, since you need proof that the system met specs initially, continues to perform within limits, and has had corrective actions properly documented. That’s why keeping all three categories is the best practice.