Table 4 Dosimetric comparisons of without replanning in the initial CT, replanning in the initial CT
From: A modified VMAT adaptive radiotherapy for nasopharyngeal cancer patients based on CT-CT image fusion
Without replannng in iCT | Replanning in iCT | Sig (p) | |
|---|---|---|---|
PTVGTV Dmax | 1332.6 ± 42.4 | 1343.5 ± 65.9 | 0.77 |
PTVGTV Dmean | 1257.2 ± 30.1 | 1253.5 ± 40.3 | 0.97 |
PTVGTV V93 | 98.2 ± 1.7 | 96.9 ± 3.0 | 0.12 |
PTVGTV V95 | 94.8 ± 4.7 | 91.8 ± 7.2 | 0.26 |
PTVCTV Dmax | 1341.8 ± 40.7 | 1349.4 ± 61.3 | 0.85 |
PTVCTV Dmean | 1087.2 ± 20.7 | 1083.4 ± 31.5 | 0.91 |
PTVCTV V93 | 99.2 ± 0.7 | 98.9 ± 1.1 | 0.27 |
PTVCTV V95 | 98.8 ± 0.9 | 98.4 ± 1.3 | 0.62 |
Brainstem Dmax | 844.7 ± 95.4 | 859.7 ± 89.1 | 0.94 |
Brainstem Dmean | 448.5 ± 76.4 | 457.2 ± 92.3 | 0.84 |
Cord Dmax | 695.5 ± 44.2 | 692.0 ± 29.8 | 0.87 |
Cord Dmean | 409.0 ± 54.7 | 413.3 ± 64.2 | 0.82 |
Mandible Dmax | 1128.2 ± 95.0 | 1146.9 ± 99.5 | 0.76 |
Mandible Dmean | 705.4 ± 70.9 | 691.7 ± 70.2 | 0.91 |
Lt parotid Dmax | 1138.7 ± 114.6 | 1134.0 ± 143.2 | 0.99 |
Lt parotid Dmean | 581.9 ± 87.1 | 519.4 ± 61.3 | 0.05 |
Lt parotid V5 | 49.9 ± 12.3 | 42.1 ± 8.5 | 0.01 |
Rt parotid Dmax | 1151.8 ± 108.1 | 1144.0 ± 95.8 | 0.75 |
Rt parotid Dmean | 581.2 ± 79.8 | 514.9 ± 32.8 | 0.02 |
Rt parotid V5 | 50.7 ± 8.3 | 39.5 ± 4.0 | 0.001 |