VOI/patient | Pt1 | Pt2 | Pt3 | Pt4 | Pt5 | Pt6 | Pt7 | Pt8 | Pt9 | Pt10 | Mean ± ∆ | P value | |
PTV54 (D95%) | PBS | 55.3 | 54.3 | 54.6 | 54.6 | 54.6 | 54.5 | 54.1 | 54.0 | 54.2 | 54.0 | 54.4 ± 0.4 | 0.08 |
VMAT | 53.9 | 53.7 | 54.6 | 54.0 | 54.2 | 53.5 | 54.0 | 54.0 | 54.3 | 54.7 | 54.1 ± 0.4 | ||
PTV60 (D95%) | PBS | 60.7 | 60.1 | 60.2 | 60.3 | 60.2 | 59.6 | 59.7 | 60.3 | 60.2 | 60.1 | 60.1 ± 0.3 | 0.07 |
VMAT | 59.9 | 59.1 | 60.2 | 60.2 | 60.1 | 59.5 | 60.0 | 60.0 | 60.0 | 59.7 | 59.9 ± 0.3 | ||
CTV54 (D98%) | PBS | 55.0 | 53.9 | 54.4 | 54.9 | 54.5 | 54.2 | 54.1 | 53.9 | 54.1 | 54.2 | 54.3 ± 0.4 | 0.02 |
VMAT | 54.4 | 55.2 | 54.7 | 54.9 | 54.8 | 54.3 | 54.0 | 55.0 | 55.5 | 55.8 | 54.9 ± 0.6 | ||
CTV60 (D98%) | PBS | 60.7 | 60.2 | 60.1 | 60.7 | 60.6 | 60.1 | 59.9 | 60.3 | 60.3 | 60.4 | 60.3 ± 0.3 | 0.11 |
VMAT | 60.4 | 60.6 | 60.2 | 60.8 | 60.9 | 60.1 | 60.0 | 61.1 | 61.0 | 60.7 | 60.6 ± 0.4 | ||
Brainstem (D.max) | PBS | 33.7 | 30.5 | 37.0 | 42.3 | 31.3 | 47.4 | 42.9 | 38.0 | 23.5 | 30.8 | 35.7 ± 7.2 | 0.92 |
VMAT | 39.4 | 38.1 | 38.8 | 33.1 | 25.9 | 37.0 | 33.7 | 33.8 | 35.7 | 44.6 | 36.0 ± 4.9 | ||
Cord (D.max) | PBS | 44.8 | 41.7 | 43.8 | 41.6 | 41.0 | 43.7 | 41.2 | 36.2 | 35.8 | 32.8 | 40.3 ± 4.0 | 0.78 |
VMAT | 42.6 | 42.7 | 36.5 | 37.7 | 44.7 | 37.2 | 34.5 | 36.6 | 42.0 | 43.8 | 39.8 ± 3.7 | ||
Oral cavity (D.mean) | PBS | 4.2 | 2.1 | 6.9 | 5.9 | 1.3 | 7.4 | 2.0 | 3.2 | 1.6 | 2.1 | 3.7 ± 2.3 | < 0.001 |
VMAT | 19.9 | 15.6 | 16.3 | 23.1 | 16.6 | 24.1 | 16.0 | 20.1 | 17.7 | 16.5 | 18.6 ± 3.1 | ||
Contralateral submandibular (D.mean) | PBS | 29.5 | 43.2 | 24.5 | 30.9 | 33.8 | 36.0 | 29.4 | 36.8 | 39.8 | 29.5 | 33.3 ± 5.7 | 0.71 |
VMAT | 29.0 | 36.4 | 20.3 | 30.1 | 32.4 | 51.2 | 29.1 | 29.3 | 30.6 | 33.6 | 32.2 ± 7.9 | ||
Contralateral Parotid (D.mean) | PBS | 16.2 | 17.9 | 12.2 | 13.0 | 15.4 | 19.1 | 16.3 | 12.8 | 20.9 | 9.6 | 15.4 ± 3.5 | 0.004 |
VMAT | 19.7 | 18.1 | 25.0 | 17.7 | 18.7 | 22.4 | 19.5 | 15.3 | 20.3 | 17.9 | 19.5 ± 2.7 | ||
Ipsilateral Parotid (D.mean) | PBS | 20.4 | 27.8 | 27.8 | 25.6 | 23.7 | 31.1 | 24.1 | 28.2 | 39.1 | 20.4 | 26.8 ± 5.5 | 0.56 |
VMAT | 26.1 | 25.7 | 37.0 | 26.1 | 25.4 | 22.6 | 22.7 | 32.8 | 26.9 | 22.3 | 26.8 ± 4.7 | ||
Larynx (D.mean) | PBS | 29.0 | 31.1 | 27.3 | 27.1 | 25.5 | 31.3 | 27.3 | 24.5 | 23.0 | 25.5 | 27.2 ± 2.7 | 0.005 |
VMAT | 32.4 | 33.7 | 38.1 | 28.9 | 33.3 | 27.3 | 34.6 | 27.1 | 34.7 | 28.1 | 31.7 ± 3.9 |