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
Methods
Volume in cm3 (min-max)
Rectum
1
43.6 (22.0–147.3)
2
54.7 (29.8–161.4)
3
63.0 (36.5–175.3)
4
60.5 (30.5–176.2)