How frequently should the center of rotation offset correction be performed on SPECT cameras?

The center of rotation (COR) offset correction is an essential calibration step for SPECT cameras that helps ensure accurate image acquisition and processing. Performing this correction weekly is beneficial for maintaining high-quality imaging and reproducibility of results. Regular corrections help mitigate errors that can arise from mechanical shifts or changes in the camera's performance over time, which could lead to pixel misalignment and affect the overall quality of the diagnostic images produced.

Weekly checks are particularly important in clinical settings where a high volume of scans is performed and consistency is crucial for accurate diagnoses and treatment planning. This frequency balances the need for precision with practical workflow considerations in the nuclear medicine department.

Other intervals, such as daily or monthly, may not be sufficient to maintain image quality, given the wear and tear on the equipment due to daily operations. Quarterly adjustments could also lead to longer periods where inaccuracies may affect imaging, thus compromising patient care. Regular weekly maintenance helps to proactively address any performance drifts before they impact diagnostic outcomes.