Table 2.

Dose-volume constraints for IMRT plans

Structure	Type	Rank	Objective	Dose (cGy)	Volume (%)	Weight
PTV	Target	1	Maximum	5200	0	100
PTV	Target	1	Minimum	4900	100	100
Ipsilateral lung	Organ at risk	2	Maximum	2000	20	100
Ipsilateral lung	Organ at risk	2	Minimum	1200	30	100
Heart	Organ at risk	3	Maximum	4500	0	100
Unspecified tissue	Organ at risk	4	Maximum	4500	0	100