Table 4.

Quantitative comparison of the mean dose‐volume histograms of the 3‐cm margin (3cmM) surrounding the planning prostate‐only and the body minus the treatment volume (Body‐TV) with the five treatment techniques

	DAT	2A‐DAT	3cmM M‐DAT	BW‐DAT	IMRT		DAT	2A‐DAT	Body‐TV M‐DAT	BW‐DAT	IMRT
$D_{max}(\%)$	$105\pm 2.6$	$105\pm 2.7)$	$102.5\pm 1.8$	$102.5\pm 2.8$	$100\pm 2.5$	$D_{max}(\%)$	$60.5\pm 9.4$	$56.5\pm 8.7$	$52.5\pm 7.2$	$42.5\pm 2.8$	$87.5\pm 12.0$
V 95% (%)	$9.0\pm 1.6$	$9.0\pm 3.2$	$10.0\pm 2.1$	$5.0\pm 1.6$	$2.0\pm 1.2$	$V_{30\%}$ (%)	$17.5\pm 9.6$	$21.7\pm 7.1$	$15.0\pm 4.5$	$8.0\pm 3.1$	$26.0\pm 6.3$
$V_{85\%}$ (%)	$17.0\pm 4.8$	$24.5\pm 6.6$	$17.0\pm 4.5$	$10.0\pm 2.6$	$5.5\pm 1.8$	$V_{20\%}$ (%)	$39.5\pm 7.1$	$54.2\pm 6.2$	$34.3\pm 8.3$	$29.0\pm 9.4$	$56.0\pm 11.2$
$V_{80\%}$ (%)	$20.0\pm 5.6$	$29.7\pm 6.6$	$20.0\pm 5.8$	$12.2\pm 4.6$	$7.5\pm 3.1$	$V_{10\%}$ (%)	$66.0\pm 10.6$	$85.0\pm 12.6$	$66.0\pm 14.2$	$66.0\pm 13.8$	$82.0\pm 13.5$
$V_{70\%}$ (%)	$27.0\pm 8.6$	$41.0\pm 7.6$	$26.0\pm 12.5$	$17.7\pm 8.4$	$10.7\pm 3.6$

^aAll values are $\text{mean}\pm \text{standard}\hspace{0.17em}\text{deviation}$.

$\text{DAT}=\text{dynamic}$ arc therapy; $2\mathrm{A}-\text{DAT}=\text{two}‐\text{axis}$ dynamic arc therapy; $\text{BW}‐\text{DAT}=\text{bilateral}$ wedged dynamic arc; $\mathrm{M}-\text{DAT}=\text{modified}$ dynamic arc therapy; $\text{IMRT}=\text{intensity}‐\text{modulated}$ radiation therapy; $D_{\text{max}}=\text{maximum dose to the volume of interest}$; $V_{\mathrm{x}\%}=\text{percentage of the volume of interest exceeding}\mathrm{x}\%\text{of the prescribed dose}\left(78\text{Gy}\right)$.