TABLE 1

Physical Characteristics and Performance Metrics of the 2 PET/CT Scanners

ParametermCT Flow (8)Vision (6)
DetectorPMT-based analogSilicon PMT–based digital
Scintillator4 × 4 × 20 mm LSO3.2 × 3.2 × 20 mm LSO
Axial field of view (cm)21.026.3
NEMA spatial resolution at 1 cm (mm)4.23.6
CTR (ps)538215
NEMA sensitivity (kcps/MBq)10.015.6
  • PMT = photomultiplier tube; NEMA = National Electrical Manufacturers Association; LSO = lutetium oxyorthosilicate.