How often should the linearity of a dose calibrator be tested?

The linearity of a dose calibrator should be tested quarterly because this frequency allows for the identification and correction of any potential issues that could affect the accuracy of dose measurements in a timely manner. Regular testing is essential to ensure that the dose calibrator maintains its performance and remains reliable for clinical use. Linearity refers to the ability of the dose calibrator to produce consistent measurements across a range of radioactive sources and activities, which is crucial for patient safety and effective treatment. Monthly testing could be deemed excessive, potentially leading to unnecessary use of resources, while annual or biannual testing might not provide sufficient oversight for maintaining calibration accuracy in dynamic clinical settings. Thus, quarterly testing strikes the right balance between ensuring reliability and efficient use of time and resources.