Table 1.
Dose index of the PTV for the treatment plans on pre- and post-CT images and the results for the five irradiation techniques
| Absolute dose (mean ± SD, Gy or GyE) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D98% | D95% | D50% | D2% | |||||||||
| SO(−) | SO(+) | P-value | SO(−) | SO(+) | P-value | SO(−) | SO(+) | P-value | SO(−) | SO(+) | P-value | |
| 3DCRT | 71.2 ± 0.8 | 71.2 ± 1.1 | 0.7012 | 72.5 ± 0.5 | 72.6 ± 0.6 | 0.4142 | 75.9 ± 0.3 | 76.0 ± 0.4 | 0.041 | 78.1 ± 0.8 | 78.6 ± 0.8 | 0.0484 |
| VMAT | 71.6 ± 1.9 | 73.5 ± 1.6 | 0.0003 | 73.5 ± 1.2 | 74.2 ± 1.1 | 0.0009 | 76.1 ± 0.0 | 76.1 ± 0.1 | 0.8204 | 77.5 ± 0.4 | 77.5 ± 0.4 | 0.2196 |
| HT | 71.6 ± 1.8 | 72.5 ± 1.5 | 0.0637 | 73.8 ± 1.3 | 74.3 ± 0.8 | 0.1231 | 76.4 ± 0.1 | 76.4 ± 0.1 | 0.3634 | 77.8 ± 1.0 | 77.9 ± 0.8 | 0.3683 |
| CK | 35.5 ± 1.0 | 35.1 ± 0.4 | 0.379 | 36.2 ± 0.2 | 36.2 ± 0.2 | 0.8618 | 39.8 ± 1.2 | 40.4 ± 0.8 | 0.0053 | 45.1 ± 1.6 | 46.0 ± 1.3 | 0.0062 |
| Proton | 57.9 ± 2.9 | 58.6 ± 2.5 | 0.043 | 59.8 ± 2.1 | 60.3 ± 1.6 | 0.0319 | 63.5 ± 0.3 | 63.6 ± 0.4 | 0.9055 | 65.8 ± 0.4 | 65.5 ± 0.8 | 0.4467 |