Table 4 Comparisons of dose-volume parameters of major organs at risk for IMRT in the three groups

37.22 ± 1.169

37.32 ± 1.283

37.18 ± 1.26

2.118

0.130

33.21 ± 1.69

34.68 ± 1.72

35.91 ± 1.64

2.199

0.120

24.19 ± 1.12

25.46 ± 1.32

26.03 ± 1.49

0.432

0.651

24.08 ± 1.23

25.02 ± 1.62

25.95 ± 1.74

2.568

0.086

16.22 ± 4.82

17.18 ± 5.77

33.45 ± 5.34

6.418

0.003

37.22 ± 7.23

36.22 ± 8.34

51.22 ± 9.19

6.091

0.004

5.77 ± 2.61

5.31 ± 3.61

19.88 ± 5.84

8.926

< 0.001

12.21 ± 6.23

13.24 ± 5.72

38.11 ± 7.16

10.365

< 0.001

28.44 ± 3.72

29.17 ± 5.61

48.21 ± 6.35

12.672

< 0.001

50.22 ± 5.74

54.32 ± 6.11

61.25 ± 7.54

5.798

0.005