Table 3 Dose comparison of OARs of VMAT and IMRT

68.7 ± 8.1

75.4 ± 7.0

6.7

 < 0.001

46.5 ± 3.2

46.1 ± 2.9

 − 0.4

0.409

33.6 ± 1.7

30.8 ± 1.8

 − 2.8

 < 0.001

23.5 ± 1.7

20.2 ± 1.5

 − 3.3

 < 0.001

17.5 ± 1.4

14.1 ± 1.3

 − 3.4

 < 0.001

11.3 ± 1.3

8.3 ± 1.2

 − 3.0

 < 0.001

12.6 ± 0.7

11.5 ± 0.7

 − 1.1

 < 0.001

61.0 ± 14.1

68.7 ± 11.6

7.7

0.002

27.9 ± 7.9

20.9 ± 7.8

 − 7.0

 < 0.001

12.2 ± 3.8

9.1 ± 3.4

 − 3.1

 < 0.001

7.4 ± 2.6

4.6 ± 1.7

 − 2.8

 < 0.001

4.5 ± 1.7

2.3 ± 1.0

 − 2.2

 < 0.001

2.0 ± 1.1

0.7 ± 0.5

 − 1.3

 < 0.001

6.0 ± 1.1

5.2 ± 0.9

 − 0.8

 < 0.001

28.1 ± 10.0

28.0 ± 11.8

 − 0.1

0.987

13.5 ± 5.3

11.6 ± 5.2

 − 1.9

0.109

3.7 ± 2.2

4.0 ± 2.5

0.3

0.504

1.0 ± 1.0

0.9 ± 0.9

 − 0.1

0.179

2.5 ± 0.6

2.5 ± 0.8

0.0

0.677

16.9 ± 11.5

19.3 ± 10.0

2.4

0.199

2.3 ± 2.0

2.8 ± 2.7

0.5

0.114

0.1 ± 0.1

0.1 ± 0.3

0.0

0.709

1.5 ± 0.5

1.6 ± 0.4

0.1

0.087

41.9 ± 7.4

40.7 ± 5.7

 − 1.2

0.314

27.7 ± 4.6

24.9 ± 3.3

 − 2.8

 < 0.001

17.4 ± 2.5

15.5 ± 1.8

 − 1.9

 < 0.001

10.3 ± 1.3

8.3 ± 1.0

 − 2.0

 < 0.001

6.1 ± 0.9

4.7 ± 0.6

 − 1.4

 < 0.001

3.3 ± 0.5

2.5 ± 0.3

 − 0.8

 < 0.001

6.3 ± 0.8

5.7 ± 0.6

 − 0.6

 < 0.001

40.3 ± 9.3

44.6 ± 8.2

4.3

0.002

22.3 ± 2.4

22.4 ± 2.7

0.1

0.806

15.2 ± 1.1

14.0 ± 1.1

 − 1.2

 < 0.001

10.6 ± 0.9

9.1 ± 0.8

 − 1.5

 < 0.001

7.9 ± 0.7

6.4 ± 0.7

 − 1.5

 < 0.001

5.1 ± 0.6

3.7 ± 0.5

 − 1.4

 < 0.001

6.5 ± 0.5

6.1 ± 0.6

 − 0.4

 < 0.001