Rectum

Prone 3DCRT

Supine IMRT

Supine VMAT

Prone 3DCRT vs.

Supine IMRT

Prone 3DCRT vs.

Supine VMAT

Supine IMRT vs.

Supine VMAT

Ave.

Ave.

Ave.

p-value

p-value

p-value

D2%

78.36

77.95

78.53

n.s.

n.s.

n.s.

Dmean

51.95

44.16

42.45

0.031

0.013

n.s.

V20Gy

84.73

89.88

88.06

n.s.

n.s.

n.s.

V50Gy

55.44

37.58

34.06

0.009

0.003

0.006

V60Gy

48.64

27.21

25.19

0.004

0.003

0.001

V70Gy

40.16

22.43

16.31

0.030

0.003

n.s.

V75Gy

29.54

9.29

10.23

0.001

0.004

n.s.