What is the frequency for performing a coincidence timing check in PET quality control?

The frequency for performing a coincidence timing check in PET quality control is daily. This routine check is crucial because it ensures the accuracy and precision of the coincidence timing in the positron emission tomography system, which directly impacts image quality and diagnostic reliability. Performing this check daily helps to identify any potential issues with the timing system early on, thus maintaining the integrity of the imaging process and providing assurance that the PET scanner is functioning correctly. Regular assessments foster optimal performance and help uphold the standards required in a clinical setting, as variations in timing could lead to misinterpretations in the resulting images. Thus, daily timing checks are a key component of ongoing quality assurance in PET imaging.