Table 1. Dose–volume constraints for target and critical structures.

Structures	Volume (%)	Dose (Gy)	Weighting priority
Planning target volume	95	50.4	95
Internal mammary nodes	95	50.4	95
Supraclavicular nodes	95	50.4	95
Axillary levels I, II, III	95	50.4	95
Left lung	45	10	95
	20	20	95
Right lung	3	5	92
Heart	2	30	97
	10	10	97
Right breast	1	2	95