Table 2.

Mean dosimetric parameters ± standard deviation from 3D CRT, ${\text{IMRT}}_{\text{NC}},{\text{IMRT}}_{\text{CO}}$, and VMAT

	3D CRT		${\mathit{\text{IMRT}}}_{\mathit{\text{NC}}}$	${\mathit{\text{IMRT}}}_{\mathit{\text{CO}}}$	VMAT
CTV	${\mathrm{V}}_{95\%}$	$99.8\pm 0.4$	$99.5\pm 0.6$ *	$99.5\pm 0.6$ *	$99.5\pm 0.6$ *
	HI	$1.05\pm 0.02$	$1.07\pm 0.04$ *	$1.07\pm 0.03$ *	$1.11\pm 0.04$ *†‡
	CI	$1.56\pm 0.27$	$1.42\pm 0.32$	$1.44\pm 0.30$	$1.60\pm 0.32$
PTV	${\mathrm{V}}_{95\%}$	$98.5\pm 1.4$	$96.3\pm 2.0$ *	$96.5\pm 1.5$ *	$96.4\pm 1.8$ *
	HI	$1.05\pm 0.02$	$1.08\pm 0.05$ *	$1.07\pm 0.04$ *	$1.12\pm 0.02$ *†‡
	CI	$1.04\pm 0.17$	$0.95\pm 0.20$	$0.96\pm 0.21$	$1.07\pm 0.22$ †‡
Skin	${\mathrm{D}}_{10}{\text{cm}}^3(\%)$	$45.9\pm 7.1$	$41.9\pm 5.9$ *	$43.8\pm 6.5$	$46.3\pm 7.42$ †‡
	${\mathrm{D}}_1{\text{cm}}^3(\%)$	$72.9\pm 9.6$	$59.2\pm 10.3$ *	$61.1\pm 11.9$ *	$64.2\pm 11.7$ *†
	${\mathrm{D}}_{\text{max}}(\%)$	$86.5\pm 6.7$	$73.7\pm 11.5$ *	$74.3\pm 12.1$ *	$76.3\pm 12.5$ *
ILB	${\mathrm{V}}_{20\%}(\%)$	$28.5\pm 8.5$	$27.0\pm 7.8$ *	$26.4\pm 8.3$ *	$23.5\pm 7.5$ *†‡
	${\mathrm{V}}_{50\%}(\%)$	$15.3\pm 5.3$	$14.3\pm 3.9$	$14.8\pm 5.5$	$14.1\pm 5.6$ *†
	${\mathrm{V}}_{100\%}(\%)$	$4.3\pm 1.6$	$3.8\pm 1.3$ *	$3.9\pm 1.4$	$4.4\pm 1.9$ †‡
	${\mathrm{D}}_{1\%}(\%)$	$103.7\pm 1.8$	$103.9\pm 2.5$ *	$104.0\pm 2.3$ *	$105.6\pm 2.8$ *
Heart	${\mathrm{D}}_{10}{\text{cm}}^3(\%)$	$2.5\pm 1.7$	$1.8\pm 1.6$ *	$1.6\pm 1.4$ *	$1.3\pm 1.1$ *†‡
CB	${\mathrm{D}}_{10}{\text{cm}}^3(\%)$	$1.0\pm 0.5$	$0.7\pm 0.3$ *	$0.8\pm 0.3$ *†	$0.6\pm 0.2$ *‡
ILL	${\mathrm{D}}_{10}{\text{cm}}^3(\%)$	$11.4\pm 8.3$	$13.2\pm 10.8$	$11.8\pm 9.8$	$9.6\pm 9.9$ †‡
Ribs	${\mathrm{D}}_{\text{max}}(\%)$	$33.6\pm 33.0$	$34.3\pm 36.6$	$33.7\pm 35.8$	$30.4\pm 36.6$ †‡
Dose fall off	${\mathrm{V}}_{50\%}$/${\mathrm{V}}_{100\%}$ of ILB	$3.7\pm 0.8$	$3.9\pm 0.8$	$4.0\pm 1.1$	$3.3\pm 0.8$ *†‡
Delivery time (min)		$11.0\pm 1.5$	$9.7\pm 1.0$ *	$8.3\pm 1.1$ *†	$7.0\pm 1.0$ *†‡

^* $p\text{value}<0.05$ compared to 3D CRT where $p=$ the two‐tailed paired t‐test.

^† $p\text{value}<0.05$ compared to ${\text{IMRT}}_{\text{NC}}$.

^‡ $p\text{value}<0.05$ compared to ${\text{IMRT}}_{\text{CO}}$.