Table 1 NRMSE in the sphere VOIs and COV% and RCmean in the background ROIs for 68Ga PET, qSPECT, OSEM + RM and SPECTRE. BKG is the background compartment of the phantom
Sphere Diameter (mm) | 68Ga PET 3it21s NRMSE | qSPECT 4it8s NRMSE | OSEM + RM 40it12s NRMSE | SPECTRE 40it12s NRMSE |
|---|---|---|---|---|
37 | 0.25 | 0.41 | 0.30 | 0.26 |
28 | 0.31 | 0.57 | 0.42 | 0.35 |
22 | 0.37 | 0.67 | 0.45 | 0.41 |
17 | 0.41 | 0.75 | 0.49 | 0.49 |
13 | 0.49 | 0.80 | 0.61 | 0.54 |
10 | 0.60 | 0.85 | 0.70 | 0.54 |
BKG RCmean | 0.99 | 0.95 | 1.04 | 1.03 |
BKG COV% | 4.1 | 8.7 | 20.0 | 4.3 |