Table 3 Volumes of Duo3 receiving irradiation dose at each 5 Gy interval with the two delineation methods
Old delineation method (Mean ± Std %) | New delineation method (Mean ± Std %) | P | |
|---|---|---|---|
V5 | 100% | 100% | – |
V10 | 100% | 100% | – |
V15 | 100% | 100% | – |
V20 | 100% | 100% | – |
V25 | 99.98 ± 0.09% | 99.70 ± 0.80% | 0.122 |
V30 | 99.25 ± 1.63% | 96.82 ± 4.23% | 0.021 |
V35 | 97.21 ± 3.93% | 89.65 ± 8.58% | 0.001 |
V40 | 93.18 ± 6.53% | 79.50 ± 11.99% | < 0.001 |
V45 | 82.93 ± 15.64% | 65.63 ± 14.25% | < 0.001 |
V50 | 65.60 ± 11.40% | 43.39 ± 14.30% | < 0.001 |
Dmean | 49.24 ± 1.60Gy | 46.09 ± 2.55Gy | < 0.001 |
Dmax | 53.96 ± 2.15Gy | 53.69 ± 1.10Gy | 0.634 |
D2cc | 52.60 ± 0.89 | 52.38 ± 0.75 | 0.392 |