What might be an indication that calibration is needed in gamma cameras?

Inconsistent imaging results are a primary indicator that calibration may be required in gamma cameras. Calibration ensures that the imaging equipment produces accurate and reliable results by aligning the camera's response with known standards. When imaging results vary unexpectedly—such as differences in the quality, intensity, or clarity of the images—it signals that the camera may not be functioning properly. This inconsistency could arise from factors such as drift in the detector response or changes in the performance of the imaging system over time, necessitating recalibration to restore accuracy and ensure patient safety during diagnostic procedures.

While increased patient wait times, excessive equipment maintenance costs, and frequent staff complaints may point to operational issues or inefficiencies, they are not direct indicators of the need for calibration. These factors can arise from various other causes unrelated to the accuracy or performance of the gamma camera itself. Focusing on inconsistent imaging results specifically highlights the importance of maintaining the precision required for effective diagnosis in nuclear medicine.