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Photon sensitivities of clinical whole-body PET systems with different transaxial FOVs based on NUMA NU 2-2001 standard.
| Clinical whole-body PET systems (fixed 16 cm axial FOV) | Photon sensitivity (cps kBq–1) |
|---|---|
| Rectangular, 63 × 63 cm2 | 12 |
| Rectangular, 53 × 53 cm2 | 14 |
| Rectangular, 41 × 41 cm2 | 18 |
| Cylindrical, 83 cm system diameter (useful trans. FOV = ~55 cm) | 9 |
