Table 2.

Mean dose and volume indicators of normal tissue ($\mathrm{n}=10$) in the prone and supine positions

OAR	Dose/Volume	Prone Plan	Supine Plan	p‐value
LAD‐PRV	Dmean(cGy)	$2626.50\pm 675.70$	$3072.33\pm 716.09$	0.043
	V10(%) a	$77.15\pm 18.10$	$91.73\pm 8.37$	0.064
	V20(%)	$66.41\pm 21.78$	$74.98\pm 21.49$	0.042
	V25(%)	$53.11\pm 22.65$	$65.43\pm 24.58$	0.105
	V30(%)	$40.19\pm 20.45$	$55.13\pm 25.28$	0.146
	V40(%)	$22.00\pm 12.85$	$31.40\pm 16.26$	0.259
LV	Dmean(cGy)	$1176.33\pm 452.21$	$1751.33\pm 577.76$	0.003
	V10(%)	$48.54\pm 27.53$	$81.14\pm 16.60$	0.005
	V20(%)	$14.84\pm 13.88$	$30.05\pm 23.58$	0.026
	V25(%)	$8.72\pm 8.34$	$21.26\pm 18.35$	0.042
	V30(%)	$5.25\pm 4.20$	$13.94\pm 14.82$	0.146
	V40(%)	$0.94\pm 1.59$	$3.71\pm 5.95$	0.192
Heart	Dmean(cGy)	$1134.83\pm 482.13$	$1536.83\pm 492.79$	0.039
	V10(%)	$43.03\pm 26.68$	$71.34\pm 24.75$	0.029
	V20(%)	$13.75\pm 8.16$	$26.34\pm 13.11$	0.011
	V25(%)	$7.89\pm 4.90$	$16.59\pm 9.68$	0.019
	V30(%)	$4.02\pm 2.60$	$9.56\pm 5.77$	0.034
	V40(%)	$1.29\pm 1.06$	$2.49\pm 2.33$	0.228
L‐Lung	Dmean(cGy)	$861.17\pm 320.97$	$1414.50\pm 222.43$	0.004
	V05(%)	$57.79\pm 27.80$	$85.65\pm 9.41$	0.031
	V20(%)	$10.25\pm 5.14$	$20.87\pm 4.87$	0.006
R‐Lung	Dmean(cGy)	$258.00\pm 106.28$	$439.20\pm 201.18$	0.070
	V05(%)	$10.35\pm 9.32$	$37.97\pm 26.31$	0.083
R‐Breast	Dmax(cGy)	$591.20\pm 117.15$	$809.60\pm 184.40$	0.124
	Dmean(cGy)	$218.00\pm 57.87$	$258.40\pm 25.64$	0.164

^a8