Which procedure is essential for maintaining gamma camera performance?

Daily flood imaging is essential for maintaining gamma camera performance because it allows for the assessment of the camera's uniformity, sensitivity, and overall functionality. Flood imaging involves using a source of radiation to create a uniform exposure across the entire field of view of the gamma camera. This procedure helps identify any discrepancies or irregularities in the camera's response, such as pixel defects or variations in sensitivity, which can affect image quality.

Regular performance checks, including daily flood imaging, play a critical role in ensuring that the camera provides accurate and reliable images, essential for diagnosis and treatment planning in nuclear medicine. By routinely performing this procedure, any issues can be detected early, allowing for timely maintenance or adjustments that ensure optimal operation of the gamma camera.

Other choices, such as annual software updates, monthly usage reports, and weekly calibration checks, while important for overall maintenance and performance monitoring, do not provide the same level of immediate feedback on the camera's operational integrity as daily flood imaging does.