Table 2 The mean and standard deviation of Dw and Dm in dose-volume indices calculated with Monte Carlo for 10 Lung IMRT cases
ROI | Parameter | Dw(Gy) | Dm(Gy) | Diff(%) | p |
|---|---|---|---|---|---|
PTV65 | D98% | 60.7 ± 2.9 | 60.6 ± 2.9 | −0.2 ± 0.5 | 0.274 |
D50% | 68.1 ± 0.3 | 68.3 ± 0.3 | −0.3 ± 0.3 | 0.106 | |
D2% | 71.1 ± 0.9 | 70.9 ± 1.0 | 0.3 ± 0.4 | 0.032 | |
PTV50 | D98% | 49.6 ± 1.0 | 49.8 ± 1.0 | −0.3 ± 0.3 | 0.004 |
D50% | 64.2 ± 4.2 | 64.2 ± 4.3 | −0.1 ± 0.4 | 0.707 | |
D2% | 70.8 ± 1.0 | 70.6 ± 1.1 | 0.2 ± 0.4 | 0.137 | |
Spinal | D50% | 28.1 ± 9.8 | 28.1 ± 9.7 | 0.3 ± 0.3 | 0.001 |
D2% | 41.2 ± 2.4 | 41.1 ± 2.4 | 0.3 ± 0.4 | 0.046 | |
Lungs | D50% | 8.5 ± 2.9 | 8.5 ± 2.9 | −0.2 ± 0.2 | 0.052 |
D2% | 65.8 ± 3.9 | 66.2 ± 4.1 | −0.6 ± 0.5 | 0.003 | |
Esophagus | D50% | 40.0 ± 16.9 | 40.0 ± 16.9 | −0.1 ± 0.6 | 0.718 |
D2% | 60.2 ± 2.9 | 60.7 ± 3.1 | −0.7 ± 0.5 | 0.004 | |
Heart | D50% | 6.1 ± 7.0 | 6.1 ± 7.0 | 1.1 ± 0.5 | 0.010 |
D2% | 51.0 ± 10.7 | 50.5 ± 10.5 | 0.6 ± 0.6 | 0.001 |