Table 3.
Dose-volumetric parameters when plans were recalculated with RPL and XVMC using the same monitor units of BPL in Table 2
| Group | IC dose [Gy] | ITV |
PTV |
Lungs |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| D95 [Gy] | Min dose [Gy] | Max dose [Gy] | D95[Gy] | Min dose [Gy] | Max dose [Gy] | HI | Mean dose [Gy] | V20 [%] | V5 [%] | ||
| RPL | 50.1 ± 0.8 | 49.8 ± 1.2 | 49.3 ± 1.5 | 53.4 ± 1.3 | 49.4 ± 1.4 | 48.4 ± 1.7 | 53.6 ± 1.4 | 1.1 ± 0.1 | 3.5 ± 0.8 | 4.6 ± 1.8 | 17.5 ±4.7 |
| XVMC | 48.7 ± 0.6 | 45.1 ± 2.4 | 43.3 ± 2.9 | 50.7 ± 1.1 | 42.7 ± 3.3 | 39.7 ±3.3 | 51.1 ±1.2 | 1.3 ± 0.1 | 3.3 ± 0.8 | 4.1 ± 1.5 | 16.9 ± 4.8 |
Data are shown as means ± SD. IC = isocenter, ITV = internal target volume, PTV = planning target volume, D95 = the dose to cover 95% of the volume, Min dose = Minimum dose, Max dose = Maximum dose, HI = homogeneity index, V20Gy and V5Gy = the percentage of the volume receiving more than 20 Gy and 5 Gy, BPL = the Batho power-law correction, RPL = the radiological path length algorithm, XVMC = the X-ray Voxel Monte Carlo algorithm.