Table 1.

Dose constraints to target volume and organs at risk employed during optimization

	Parameter	Goal
PTV	D95%	≥95%
	Dmax	≤107%
Bladder	V30	<50%
	V40	<35%
	V50	<5%
Large bowel	V30	<200cm3
	V35	<150cm3
	V40	<20cm3
	Dmax	<50Gy
Small bowel	V30	<200cm3
	V35	<150cm3
	V40	<20cm3
	Dmax	<50Gy
External genitalia	V20	<50%
	V30	<35%
	V40	<5%
Femural heads	V30	<50%
	V40	<35%
	V50	<5%
Iliac crests	V30	<50%
	V40	<35%
	V50	<5%

Legend: PTV planning target volume, V _{20,30,35,40,50} volumes receiving 20,30,35,40,50 Gy, cc cubic centimeters