Parameter | Emission scanner | Transmission scanner |
---|---|---|
Detector ring diameter (mm) | 664 | 798 |
Detector material | GSO | BGO |
No. of individual crystals | 39,600 | 2,304 |
No. of detector blocks | 88/ring | 48/ring |
No. of detector rings | 50 | 6 |
No. of image planes | 99 | |
Crystal size (mm3) | 2.45 × 5.1 × 30 | 3.8 × 6.25 × 30 |
Face of crystal block (mm2) | 23.1 × 52 | 23.1 × 52 |
No. of crystals per block | 9 × 10 | 6 × 8 |
Patient port diameter (mm) | 600 | 600 |
Axial FOV (mm) | 260 | 23.1 |
Transaxial FOV (mm) | 600 | 600 |
Coincidence time window (ns) | 6 | |
Energy window (keV) | 400–700 | 600–800 |