Specifications of microPET Systems
| Category | Parameter | Concorde Focus | Concorde P4 | Concorde R4 | Prototype microPET | microPET II |
|---|---|---|---|---|---|---|
| Detector | Crystal material | LSO | LSO | LSO | LSO | LSO |
| Crystal size (mm) | 1.51 × 1.51 × 10.00 | 2.2 × 2.2 × 10.0 | 2.2 × 2.2 × 10.0 | 2 × 2 × 10 | 0.975 × 0.975 × 12.500 | |
| Crystal pitch (mm) | 1.59 | 2.45 | 2.45 | 2.25 | 1.15 | |
| Crystal array | 144 (12 × 12) | 64 (8 × 8) | 64 (8 × 8) | 64 (8 × 8) | 196 (14 × 14) | |
| Photomultiplier tube | Hamamatsu R5900-C12 | Hamamatsu R5900-C12 | Hamamatsu R5900-C12 | Philips XP1722, 64 channel | Hamamatsu H7546-M64 | |
| System | No. of detectors | 168 | 168 | 96 | 30 | 90 |
| No. of crystals | 24,192 | 10,752 | 6,144 | 1,920 | 17,640 | |
| No. of rings | 48 | 32 | 32 | 8 | 42 | |
| No. of crystals/ring | 504 | 336 | 192 | 240 | 420 | |
| Ring diameter (cm) | 25.8 | 26.1 | 14.8 | 17.2 | 16.0 | |
| Gantry aperture (cm) | 22.0 | 22.0 | 13.0 | 16.0 | 15.3 | |
| Axial FOV (cm) | 7.6 | 7.8 | 7.8 | 1.8 | 4.9 | |
| Transaxial FOV (cm) | 19.00 | 19.00 | 9.40 | 11.25 | 8.00 | |
| Dataset | No. of sinograms | |||||
| 3D | 2,304 | 1,024 | 1,024 | 64 | 1,764 | |
| 2D | 95 | 63 | 63 | Not used | 83 | |
| Sinogram size | 288 × 252 | 192 × 168 | 84 × 96 | 100 × 120 | 140 × 210 | |
| Dataset size (MB) | ||||||
| 3D | 638 | 126 | 33 | 1.54 | 207 | |
| 2D | 26.3 | 7.8 | 2.0 | Not used | 9.7 | |
| Sampling distance (mm) | 0.795 | 1.225 | 1.225 | 1.125 | 0.575 |