TABLE 2

Summary of Recommendations for Routine QC of Clinical Nuclear Medicine Instrumentation

Instrument	At installation or after repair	Annual	Quarterly or monthly	Weekly	Daily
Survey meter	Accuracy	Accuracy	—^*	—^*	Battery check
					Background
					Constancy
Dose calibrator	Geometry (volume)- dependent response	N/A	Linearity	—^*	Constancy
			Accuracy
Well counter	Efficiency (sensitivity)	Efficiency (sensitivity)	—^*	—^*	Energy peaking Background
					Constancy
Intraoperative probe	—^*	—^*	—^*	—^*	Battery check
					Bias check
					Energy peaking (if applicable)
					Background
					Constancy
Organ uptake probe	—^*	—^*	—^*	—^*	Energy peaking
					Background
					Constancy
					Efficiency (sensitivity)
γ-camera	References 3, 5, and 8	—^*	Uniformity (for radionuclides used clinically other than ^99mTc or ⁵⁷Co)	Spatial resolution	Energy peaking Uniformity (for ^99mTc or ⁵⁷Co)
SPECT scanner or SPECT subsystem of SPECT/CT scanner	Reference 6	—^*	Tomographic uniformity	COR alignment	Energy peaking
			Overall system performance		Uniformity (for ^99mTc or ⁵⁷Co)
PET scanner or PET subsystem of PET/CT scanner	Reference 4	Normalization	—^*	Tomographic uniformity	Blank scan
	Normalization	Well-counter calibration
	Well-counter calibration
CT subsystem of PET/CT or SPECT/CT scanner	References 1, 2, and 22	Dosimetry	Laser alignment	—^*	Warm-up
			Image slice thickness		Tomographic uniformity
			Spatial resolutionLinearity		Accuracy of CT number of water
			High-contrast resolution
			Low-contrast resolution		Noise
PET/CT or SPECT/CT image registration	—^*	—^*	Accuracy	—^*	—^*
			CT-based attenuation corrections

↵* Other than QC or performance assessment procedures that may be recommended by manufacturer, no such procedure specifically recommended for this time interval exists.