Reported NEMA NU2-1994 Performance Characteristics for Cameras Studied
| Characteristic | Advance | HR+ | HR961 | C-PET | IRIX | MCD | AXIS |
|---|---|---|---|---|---|---|---|
| Scintillator | BGO | BGO | BGO | 1-in (2.54 cm) NaI | ¾-in (1.91 cm) NaI | ⅝-in (1.59 cm) NaI | ¾-in (1.91 cm) NaI |
| Crystals (no.) | 12,096 | 18,432 | 18,816 | 6 (curved) | 3 | 2 | 2 |
| Axial FOV (cm) | 15.2 | 15.5 | 15.0 | 25.6 | 38.0 | 38.0 | 38.0 |
| Sensitivity (kcps/μCi/cc) | 228 | 211 | 177 | 444 (3D) | ∼25 | 72 | ∼20 |
| Transaxial FWHM (mm)* | 3.8–4.8 | 4.3–4.6 | 3.7 | 4.6–5.0 | 4.8 | 4.5–5.2 | 4.8 |
| Axial FWHM (mm) | 4.2–6.0 | 4.2 | 4.0 | 5.5–5.7 | 6.0 | 4.9–5.0 | 6.0 |
| Scatter fraction (%) | 10 | 17 | 14 | 25 (35)† | 24 | 30–37 | 20 |