Difference in Acquisition Conditions and System Sensitivity Between fxPET and WB PET/CT Systems
| Parameter | fxPET | Discovery STE | Discovery IQ |
| Mean time between 18F-FDG injection and start of scan | 114 min (range, 92–161 min) | 58 min (range, 49–67 min) | 60 min (range, 54–68 min) |
| Acquisition time | 10 min/bed position | 2–3 min/bed position | 2–3 min/bed position |
| Sensitivity (the center) | 2.98 cps/kBq | 9.0 cps/kBq | 19.44 cps/kBq |
| Time-of-flight technology | Available | Not available | Not available |
| Spatial resolution (mm) | <2.5* | <6.7 | <6.2 |
↵* Based on iterative point-spread function reconstruction algorithm.