. 2014 Apr 20;9(6):1079–1086. doi: 10.1007/s11548-014-1001-4

Table 1.

Dose–volume histogram-based treatment planning constraints for individual targets and the normal structures for this study

Structure name	Target	PS	PG	BS	ON	OC	Eyes	Lens	Ears
Constraint type	>99 % Volume	Mean dose	Mean dose	Max dose	Max dose	Max dose	Max dose	Max dose	Max dose
Dose level	$\geq$ 20 Gy	$\leq$ 6 Gy	$\leq$ 8 Gy	$\leq$ 10 Gy	$\leq$ 8 Gy	$\leq$ 8 Gy	$\leq$ 6 Gy	$\leq$ 2 Gy	$\leq$ 4 Gy

PS pituitary stalk, PG pituitary gland, BS brain stem, ON optical nerve, OC optical chiasm