| Parameters | IMRT | VMAT | P-value |
---|---|---|---|---|
PTV1 | V95% (%) | 99.0 ± 0.5 | 99.3 ± 0.3 | 0.001 |
 | V100% (%) | 94.5 ± 1.6 | 95.9 ± 1.2 |  < 0.001 |
 | V107% (%) | 22.1 ± 7.9 | 20.9 ± 8.2 | 0.548 |
 | V110% (%) | 0.3 ± 0.2 | 0.2 ± 0.1 | 0.018 |
 | D2% (Gy) | 54.5 ± 0.3 | 54.3 ± 0.2 | 0.011 |
 | D98% (Gy) | 48.3 ± 0.6 | 48.7 ± 0.3 | 0.003 |
 | Dmean (Gy) | 52.4 ± 0.2 | 52.6 ± 0.2 | 0.014 |
 | HI | 0.12 ± 0.02 | 0.11 ± 0.01 | 0.001 |
PTV2 | V95% (%) | 99.9 ± 0.1 | 99.9 ± 0.1 | 0.374 |
 | V100% (%) | 98.8 ± 0.6 | 99.0 ± 0.6 | 0.173 |
 | V107% (%) | 13.6 ± 7.3 | 15.5 ± 9.8 | 0.264 |
 | V110% (%) | 0.1 ± 0.1 | 0.1 ± 0.1 | 0.638 |
 | D2% (Gy) | 54.1 ± 0.4 | 54.0 ± 0.4 | 0.233 |
 | D98% (Gy) | 50.2 ± 0.3 | 50.3 ± 0.4 | 0.207 |
 | Dmean (Gy) | 52.5 ± 0.3 | 52.6 ± 0.4 | 0.055 |
 | HI | 0.08 ± 0.01 | 0.07 ± 0.01 | 0.075 |
PTV | CI | 1.17 ± 0.05 | 1.10 ± 0.03 |  < 0.001 |
 | CN | 0.78 ± 0.04 | 0.84 ± 0.02 |  < 0.001 |