Table 2.

True and predicted values for PTV statistics, homogeneity, van’t Riet conformation number, and the high dose spillage, R50.

	PTV Statistics, van’t Riet Conformation Number, and Dose Spillage
	mean value ± standard deviation
	Cross-Validation Results			Test Results
	True Values	Pred Values	True - Pred	True Values	Pred Values	True - Pred
PTV D98	0.98 ± 0.01	0.98 ± 0.01	−0.00 ± 0.01	0.98 ± 0.01	0.98 ± 0.01	0.00 ± 0.00
PTV D99	0.97 ± 0.01	0.97 ± 0.04	0.00 ± 0.04	0.96 ± 0.01	0.97 ± 0.01	0.00 ± 0.01
PTV Dmax	1.08 ± 0.02	1.08 ± 0.02	0.01 ± 0.02	1.08 ± 0.01	1.07 ± 0.02	0.01 ± 0.02
PTV Homogeneity	0.09 ± 0.02	0.08 ± 0.03	0.01 ± 0.02	0.09 ± 0.01	0.07 ± 0.02	0.01 ± 0.02
van’t Riet Conformation Number	0.88 ± 0.08	0.92 ± 0.04	−0.04 ± 0.05	0.91 ± 0.02	0.90 ± 0.03	0.00 ± 0.02
R50	4.45 ± 1.23	4.10 ± 1.14	0.35 ± 0.23	4.00 ± 0.37	3.98 ± 0.32	0.02 ± 0.21