Table 2.

Correlation between weight loss and anatomic changes of the parotids and tumor

	Anatomic change	R2*	P value
	Volume reduction in PG-Lt	0.359	<0.001
	Volume reduction in PG-Rt	0.294	<0.001
Weight loss	Shift towards medial direction for PG-Lt centroid	0.325	<0.001
	Shift towards medial direction for PG-Rt centroid	0.594	<0.001
	Volume reduction in GTVnx	0.006	0.467
	Volume reduction in GTVnd	0.0004	0.842

^*Pearson correlation coefficient

PG-Lt left parotid gland, PG-Rt right parotid gland