Proctitis rate for rectal volume irradiated with 160Gy
0
7
8
24
25,5
5
10
15
20
25
30
%
<0.8 0.8-1.3 1.4-1.8 1.8-2.3 >2.4
CC of Rectal Volume
[Snyder et al., Int J Radiat Oncol Biol Phys, 2001]