Table 3.

Routine tests and frequency thereof for the PET scanner.

PET
Daily	Weekly	Quarterly	Annual
Detector stability check. Inspect sinograms or compare to a pattern. Gain normalization	Quantification scan Compare ROI to calibrated radioactivity	Calibration of photomultipliers Coincidence Timing Resolution Time of flight Normalization Cross-calibration with the well-counter	Uniformity Resolution Count rate Correction of dead time losses Sensitivity Quantification Table movement