IMRT ± SD

3DCRT ± SD

P-value

V25 (%)

52.06 ± 10.38

56.28 ± 14.14

0.128

V40 (%)

34.75 ± 6.36

38.38 ± 10.68

0.176

V60 (%)

19.87 ± 3.84

24.42 ± 7.16

0.042

V70 (%)

13 ± 2.12

16.98 ± 5.28

0.05