Table 3. Comparison of dose indexes of PTV and OARs in four CT images based on Monte Carlo optimization.
| Plan name | Metric | PTV | OAR1 | OAR2 |
|---|---|---|---|---|
| CTgt | Dmax | 4,730.1 | 4,371.6 | 4,155.1 |
| Dmin | 4,350.1 | 9.1 | 669.3 | |
| Dmean | 4,596.5 | 861.8 | 1,591.2 | |
| CTps | Dmax | 4,771.6 | 4,427.0 | 4,236.0 |
| Dmin | 4,410.5 | 10.2 | 782.8 | |
| Dmean | 4,598.7 | 923.2 | 1,628.4 |
PTV, planning target volume; OAR, organs at risk; Dmax, maximum dose; Dmean, mean dose; Dmin, minimum dose; CTgt, ground truth CT; CTps, pseudo CT obtained by sGAN.