Table 2.

Statistics of the DVH metrics differences between the sCT and CT

		PTV	Liver	Left kidney	Right kidney	Stomach	Heart	Lungs	Bowel	Spinal cord
Dmin	Mean (Gy)	0.160	0.002	0.003	0.003	0.009	0.002	0.000	0.002	0.001
	SD (Gy)	0.227	0.002	0.004	0.004	0.014	0.002	0.000	0.005	0.002
	p-value	0.503	0.331	0.249	0.498	0.625	0.728	0.094	0.621	0.095
D10	Mean (Gy)	0.081	0.063	0.016	0.052	0.037	0.024	0.052	0.036	0.043
	SD (Gy)	0.049	0.051	0.025	0.053	0.033	0.034	0.032	0.040	0.034
	p-value	0.187	0.300	0.023	0.122	0.129	0.904	0.410	0.226	0.004
D50	Mean(Gy)	0.088	0.027	0.004	0.019	0.026	0.010	0.009	0.011	0.008
	SD (Gy)	0.058	0.031	0.010	0.026	0.036	0.015	0.012	0.013	0.009
	p-value	0.303	0.217	0.136	0.425	0.088	0.932	0.865	0.825	0.263
D95	Mean (Gy)	0.081	0.005	0.001	0.004	0.019	0.003	0.001	0.003	0.002
	SD (Gy)	0.059	0.013	0.004	0.006	0.031	0.002	0.002	0.005	0.004
	p-value	0.086	0.492	0.433	0.148	0.410	0.567	0.771	0.487	0.145
Dmean	Mean (Gy)	0.083	0.030	0.006	0.021	0.027	0.012	0.011	0.012	0.015
	SD (Gy)	0.055	0.025	0.011	0.024	0.033	0.018	0.006	0.016	0.016
	p-value	0.183	0.880	0.053	0.161	0.114	0.965	0.314	0.249	0.003
Dmax	Mean (Gy)	0.161	0.141	0.024	0.072	0.076	0.061	0.061	0.082	0.070
	SD (Gy)	0.123	0.106	0.048	0.102	0.103	0.078	0.141	0.076	0.054
	p-value	0.618	0.577	0.098	0.040	0.548	0.276	0.226	0.466	0.019

PTV, planning target volume; SD, standard deviation.

Mean and SD are based on the absolute difference. p-value is based on the comparison of the relative difference.