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Physical Characteristics and Performance Metrics of the 2 PET/CT Scanners
| Parameter | mCT Flow (8) | Vision (6) |
| Detector | PMT-based analog | Silicon PMT–based digital |
| Scintillator | 4 × 4 × 20 mm LSO | 3.2 × 3.2 × 20 mm LSO |
| Axial field of view (cm) | 21.0 | 26.3 |
| NEMA spatial resolution at 1 cm (mm) | 4.2 | 3.6 |
| CTR (ps) | 538 | 215 |
| NEMA sensitivity (kcps/MBq) | 10.0 | 15.6 |
PMT = photomultiplier tube; NEMA = National Electrical Manufacturers Association; LSO = lutetium oxyorthosilicate.
