Skip to main content

Table 3 Mean V5–V45 of different anal sphincters in rectal cancer patients treated with IMRT or 3D-radiation technique

From: Impact of VMAT-IMRT compared to 3D conformal radiotherapy on anal sphincter dose distribution in neoadjuvant chemoradiation of rectal cancer

 

V5

V10

V20

V30

V40

V45

Anal Sphincter (%)

 IMRT

98,7

91,0

80,1

76,6

74,4

73,4

 3D

99,7

98,8

96,5

95,1

90,9

58,0

 p-value

0,258

0,008

0,004

0,001

0,007

0,003

Internal Anal Sphincter (%)

 IMRT

98,0

87,1

73,6

69,4

66,4

65,3

 3D

100,0

100,0

97,5

94,6

88,9

51,2

 p-value

0,500

0,022

0,001

0,002

0,003

0,007

External Anal Sphincter (%)

 IMRT

98,1

87,2

73,0

68,8

66,0

64,8

 3D

99,4

97,3

91,6

88,9

79,4

38,3

 p-value

0,258

0,010

0,004

0,005

0,007

0,001

Levator Ani (%)

 IMRT

100,0

99,9

98,6

91,7

97,5

97,3

 3D

100,0

99,8

99,3

99,3

98,3

65,9

 p-value

1,000

0,258

0,129

0,062

0,067

0,000

  1. IMRT Intensity modulated radiation therapy, 3D 3D-conformal radiation therapy
  2. boldfaced p-values are statistically significant