Table 2.

Median (range) of percentage PTV and GTV dose errors in Type‐A dose calculations comparing IMRT and DCA for the 20 patients. The bolded p values indicate statistically significant differences for the high‐dose region endpoints D5% and Dmax of both PTV and GTV, where IMRT resulted in significant lower dose errors than DCA (p < 0.05)

	PTV Dmin	PTV D95%	PTV Dmean	PTV D5%	PTV Dmax
IMRT	17.6% (13.2–36.9%)	15.2% (12.1–32.7%)	9.1% (6.4–17.1%)	4.3% (1.2–8.9%)	2.9% (1.1–8.2%)
DCA	23.1% (14.5–34.2%)	16.1% (14.4–33.1%)	7.6% (6.2–17.9%)	5.1% (1.9–10.1%)	4.1% (1.8–8.5%)
p value	0.46	0.62	0.57	0.0002	0.003

	GTV Dmin	GTV D95	GTV D50	GTV D5	GTV Dmax
IMRT	12.2% (6.4–24.7%)	6.9% (3.8–14.8%)	6.1% (2.9–9.3%)	3.3% (2.1–6.9%)	2.9% (1.1–8.1%)
DCA	9.8% (2.3–16.8%)	7.0% (4.1–13.2%)	5.3% (3.1–8.7%)	4.0% (3.0–7.2%)	3.7% (1.2–8.5%)
p value	0.45	0.86	0.43	0.0013	0.008