From: Is the irradiated small bowel volume still a predictor for acute lower gastrointestinal toxicity during preoperative concurrent chemo-radiotherapy for rectal cancer when using intensity-modulated radiation therapy?
Dose level
Small bowel volume (cm3)
(Gy)
Case 1
Case 2
5
330
183
10
295
159
15
281
142
20
254
116
25
192
90
30
108
44
35
64
18
40
9