Table 1.

RTOG versus institutional dose constraints

RTOG		Institutional
Rectum		Rectum	V70 Gy ≤ 20%
	V65 Gy ≤ 35%		V65 Gy ≤ 40%
	V40 Gy ≤ 55%		V40 Gy ≤ 80%
Bladder-CTV		Bladder	V70 Gy ≤ 30%
	V65 Gy ≤ 50%		V65 Gy ≤ 60%
	V40 Gy ≤ 70%		V40 Gy ≤ 80%

CTV, clinical target volume; RTOG, Radiation Therapy Oncology Group.