Table 3.

Median (range) of percentage PTV and GTV dose errors in Type‐B dose calculations comparing IMRT vs DCA and VMAT vs DCA for the 20 patients

	PTV Dmin	PTV D95%	PTV Dmean	PTV D5%	PTV Dmax
IMRT	3.8% (−0.8 to 17.9%)	2.4% (−1.9 to 11.3%)	1.1% (−2.8 to 5.1%)	−2.3% (−5.8 to 0.9%)	−2.7% (−5.2 to 1.0%)
VMAT	3.5% (−0.6 to 13.3%)	2.1% (−0.6 to 10.4%)	1.2% (−3.0 to 4.8%)	−1.8% (−5.5 to 1.1%)	−2.2% (−5.8 to 1.3%)
DCA	3.1% (−1.2 to 10.8%)	1.2% (−2.9 to 9.1%)	0.5% (−1.8 to 4.2%)	−0.4% (−4.2 to 0.9%)	−0.7% (−4.4 to 1.6%)
p value (IMRT vs DCA)	0.82	0.51	0.67	0.84	0.74
p value (VMAT vs DCA)	0.56	0.39	0.78	0.65	0.43

	GTV Dmin	GTV D95	GTV D50	GTV D5	GTV Dmax
IMRT	1.6% (−0.5 to 10.3%)	1.2% (−0.3 to 6.4%)	0.1% (−1.3 to 3.2%)	−1.2% (−3.5 to 0.8%)	−1.8% (−4.7 to 0.8%)
VMAT	1.9% (−0.3 to 8.9%)	0.9% (−0.5 to 6.7%)	0.3% (−1.8 to 3.5%)	−0.9% (−3.2 to 0.8%)	−1.6% (−3.9 to 0.9%)
DCA	1.2% (−0.5 to 6.8%)	1.0% (−0.4 to 5.6%)	0.5% (−1.0 to 3.3%)	−0.5% (−2.5 to 0.8%)	−1.0% (−3.1 to 1.0%)
p value (IMRT vs DCA)	0.78	0.81	0.88	0.59	0.62
p value (VMAT vs DCA)	0.29	0.87	0.67	0.75	0.71