Table 2.

Optimization goals and constrains used for VMAT and HyperArc planning

Structure	Objective	Priority
		VMAT	HyperArc
NTO		75
SRS NTO			100
PTV	D99% > 63 Gy	100	250
	Dmean = 70 Gy	100	250
	Dmax < 80 Gy	100	250
Brain	as low as possible	80	150
Brain stem	Dmax < 54 Gy	50	100
Chiasm	Dmax < 50 Gy	50	100
Optic nerve	Dmax < 50 Gy	50	100
Lens	Dmax < 6 Gy	150	150