Table 1 Specifications of the PET insert
Characteristics | Value |
|---|---|
System | |
Number of detectors per ring | 6 |
Number of rings | 2 |
Total number of crystals | 18,336 |
Transaxial FoV (mm) | 40 |
Axial FoV (mm) | 98 |
Coincidence time window (ns) | 12 |
Energy window (keV) | 250–750 |
Detector module | |
Scintillators | LYSO |
Crystal array: bottom layer | 35 × 24 (6 mm thick) |
Crystal array: top layer | 34 × 23 (4 mm thick) |
Crystal pitch (mm) | 1.4 |
Scintillator dimension (mm) | 1.325 mm pixel |
Total crystal dimensions (mmxmm) | 49 × 33.6 (10 mm thick) |
SiPM array | 12 × 8 |
SiPM size (mmxmm) | 50.2 × 33.6 |
SiPM pitch (mm) | 4.2 (3-mm sensor pads and 1.2-mm gap between them) |