How often must the accuracy of a dose calibrator be determined according to the standards of practice?

The accuracy of a dose calibrator is a critical aspect of ensuring the safety and efficacy of radiopharmaceuticals used in nuclear medicine. According to standard practice guidelines, particularly those laid out by organizations such as the American College of Radiology (ACR) and the Radiological Society of North America (RSNA), the accuracy of a dose calibrator should be verified at least annually.

This annual verification is essential because it ensures that the calibrator is providing accurate measurements of radioactivity, which is paramount for administering the correct therapeutic doses to patients. Over time, factors such as wear and tear of the device, environmental changes, and calibration drift can affect its accuracy. Therefore, an annual check helps maintain a high standard of quality control and patient safety in nuclear medicine practices.

In contrast, more frequent checks, such as daily, monthly, or quarterly, may not be specified as necessary for standard practice, as they could lead to unnecessary use of resources while not aligning with regulatory or professional guidelines.