Sterility
Chemical Purity
Radionuclide Purity
Radiochemical Purity
Constancy Linearity Accuracy Geometry
Spatial resolution
Sensitivity
Temporal resolution
Parallel hole
Converging and Diverging
Pinhole
Field Uniformity
Center of Rotation
Detector Alignment
Patient motion
Tomographic Reconstruction:
Attenuation Correction
Filtered back-projection
Iterative reconstruction
Object Size Correction (Finite resolution effects)