Full arc VMAT

Partial arc VMAT

p

PTV

D_2cm (%)

58.87 ± 6.14

61.16 ± 6.67

0.002

CI

1.15 ± 0.07

1.14 ± 0.08

0.13

R_50%

5.29 ± 0.37

5.28 ± 0.37

0.44

V95 (%)

99.42 ± 0.42

99.46 ± 0.40

0.46

Lung

MLD (cGy)

449.19 ± 98.16

430.60 ± 99.30

<0.001

V5 (%)

21.59 ± 4.88

18.50 ± 4.99

<0.001

V12 (%)

9.98 ± 2.75

9.88 ± 2.73

0.59

V20 (%)

5.86 ± 1.71

5.89 ± 1.60

0.72

Spinal cord

D₁ (cGy)

1302.18 ± 375.03

1043.32 ± 488.18

<0.001

Heart

Dmean (cGy)

288.03 ± 191.81

239.50 ± 174.12

<0.001

D_15cc (cGy)

1204.04 ± 780.51

1064.21 ± 781.51

0.001

Esophagus

Dmax (cGy)

1468.71 ± 967.80

1115.36 ± 479.74

0.006

D_5cc (cGy)

718.10 ± 357.14

630.89 ± 268.58

0.01