Table 3.

Mean statistics for the head‐and‐neck plans.

	Constraint/Goal		Mean $Dose\pm 1$ SD (Gy) a
Region Of Interest	Volume	Dose (Gy)	Agility	MLCi
PTV1edited	99%	$>58.5$	$61.7\pm 0.4$	$61.6\pm 0.6$
	95%	$>61.8$	$62.8\pm 0.2$	$62.8\pm 0.3$
	50%	65	$65.2\pm 0.0$	$65.2\pm 0.0$
	5%	$<68.3$	$67.1\pm 0.2$	$67.1\pm 0.3$
	2%	$<71.5$	$67.5\pm 0.2$	$67.5\pm 0.4$
PTV2edited	99%	$>48.6$	$51.2\pm 0.4$	$51.4\pm 0.3$
	95%	$>51.3$	$52.0\pm 0.3$	$52.2\pm 0.3$
	50%	54	$54.2\pm 0.2$	$54.1\pm 0.2$
Spinal cord	Maximum	$<46$	$44.3\pm 1.0$	$44.3\pm 1.1$
Spinal cord	$1{\text{cm}}^3$	$<45$	$40.8\pm 1.2$	$41.0\pm 0.4$
Spinal cord PRV	$1{\text{cm}}^3$	$<48$	$44.8\pm 0.7$	$44.5\pm 0.9$
Brainstem	Maximum	$<54$	$43.2\pm 11.2$	$41.6\pm 14.9$
Brainstem	$1{\text{cm}}^3$	$<50$	$35.9\pm 15.0$	$35.6\pm 15.4$
Brainstem PRV	$1{\text{cm}}^3$	$<55$	$42.5\pm 10.4$	$41.6\pm 12.9$
Ipsilateral parotid	Mean	$<24$	$36.5\pm 6.1$	$37.3\pm 6.7$
Contralateral parotid	Mean	$<24$	$30.3\pm 5.5$	$31.0\pm 5.2$
Superficial parotids	Mean	$<24$	$24.8\pm 3.5$	$25.6\pm 4.1$
Total monitor units			$531.9\pm 66.4$	$477.1\pm 27.3$

^aItems in bold are statistically significant at the $p<0.05$ level.