How often should dose calibrator linearity testing be performed according to standard practice?

Dose calibrator linearity testing ensures that the dose calibrator provides accurate measurements across a range of activity levels. According to standard practice, this testing should occur quarterly. The reasoning behind this frequency is to ensure consistent performance of the calibrator and to identify any drift in accuracy that may occur over time as the equipment ages or after maintenance.

Performing linearity testing quarterly strikes a balance between ensuring accuracy and managing operational demands and costs. More frequent testing, such as daily or monthly, may not be necessary for most facilities given that calibrators are generally stable, but it is crucial to adhere to at least quarterly checks to meet regulatory and quality assurance standards.

Annual testing, while still within recommended guidelines for some aspects of equipment performance, does not provide sufficient oversight regarding potential changes in the calibrator's linearity throughout the year, which could compromise patient safety and the reliability of administered doses.