mCT | mMR | |
---|---|---|
Crystal material | LSO | LSO |
Crystal element dimension | 4 × 4 × 20 mm | 4 × 4 × 20 mm |
Detector ring diameter | 780 mm | 656 mm |
Transaxial FoV | 680 mm | 588 mm |
Axial FoV | 216 mm | 258 mm |
Coincidence window | 4.1 ns | 4.1 ns |
System energy resolution | ≤ 12% FWHM | ≤ 14% FWHM |
System time resolution | 540 ps typical | N/A (no TOF system) |
Sensitivity (cps/kBq) | 10.2 | 14.1 |
Spatial resolution—transverse | FWHM at 1 cm (mm) 4.5 | FWHM at 1 cm (mm) 4.2 |
Spatial resolution—axial | FWHM at 1 cm (mm) 4.7 | FWHM at 1 cm (mm) 4.6 |
Peak NEC rate (kcps) | 180 at ≤ 28 kBq/cc | 180 at ≤ 26 kBq/cc |
Scatter fraction (at peak NEC rate) | 37% | 38% |
Reconstruction parameters | PSF-TOF-OSEM 2i21s | PSF-OSEM 3i21s |