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Table 5 Mean rectal doses and percentage of rectal volume receiving 70 Gy (V70 Gy) values according to acute rectal toxicity grade groups.

From: Comparison of rectal volume definition techniques and their influence on rectal toxicity in patients with prostate cancer treated with 3D conformal radiotherapy: a dose-volume analysis

 

Mean Rectal Dose (Gy)

V70 Gy (%)

 

Grade

0–1

Grade

≥ 2

p

Grade

0–1

Grade

≥ 2

p

Method 1

53,4

61,0

< 0.001

27,2

42,3

< 0.001

Method 2

49,8

58,4

< 0.001

23,0

37,3

< 0.001

Method 3

44,5

52,4

< 0.001

19,8

32,5

< 0.001

Method 4

46,1

54,7

< 0.001

20,7

33,4

< 0.001

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Radiation Oncology

ISSN: 1748-717X

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