Table 4 Comparison with other PET/MRI systems
System | MADPET4 [14] | MR Solutions PET insert model I-802 [23] | MR Solutions PET insert model I-402 (present study) |
|---|---|---|---|
MRI (Tesla) | 7 | 7 | 3 |
PET characteristics | |||
Energy window (keV) #energy threshold, time-over-threshold method | 250# | 250–750 | 250–750 |
Internal ring diameter (mm) | 88 | 116 | 60 |
Axial FoV (mm) | 20 | 103 | 98 |
Maximum sensitivity (%) | 0.7 | 7.9*/7.5** | 10.15˫ |
Tangential spatial resolution Centre FoV (mm) | 1.29 | 1.69** | 1.09˫ |
Radial spatial resolution Centre FoV (mm) | 1.29 | 1.74** | 1.54˫ |
Peak Mouse NECR (MBq) | 29 | 34*/35** | 17˫ |
Peak Mouse NECR (kcps) | 103 | 427*/300** | 175˫ |