Table 1.

Numerical comparison of DAUNet trained and tested on sMRI (DSUNet sMRI), DAUNet trained and tested on CBCT (DSUNet CBCT), and DSUNet trained and tested on sMRI (DSUNet sMRI) for five-fold cross-validation.

	Method	DSC	Sensitivity	Specificity	HD (mm)	MSD (mm)	RMSD (mm)	CMD (mm)	VD (cc)
Bladder	DSUNet sMRI	0.93±0.04	0.95±0.032	0.91±0.07	5.91±4.90	0.52±0.29	0.85±0.62	1.25±1.00	9.17±6.30
	DAUNet CBCT	0.91±0.06	0.96±0.048	0.87±0.08	12.79±14.82	0.67±0.33	1.07±0.64	1.4±1.49	16.57±18.61
	DAUNet sMRI	0.94±0.02	0.94±0.04	0.96±0.02	4.58±3.94	0.48±0.23	0.83±0.63	0.93±0.74	6.92±5.71
	P-value DAUNet sMRI vs. DSUNet sMRI	0.174	0.022	0.003	0.021	0.591	0.922	0.014	0.195
	P-value DAUNet sMRI vs. DAUNet CBCT	0.004	0.002	<0.001	<0.001	0.002	0.019	0.005	0.007
Prostate	DSUNet sMRI	0.83±0.045	0.83±0.091	0.86±0.091	6.42±2.46	0.91±0.26	1.28±0.34	2.48±1.11	6.39±7.29
	DAUNet CBCT	0.80±0.05	0.80±0.10	0.81±0.08	6.82±3.088	1.06±0.29	1.48±0.48	3.22±1.30	5.65±6.80
	DAUNet sMRI	0.86±0.04	0.86±0.06	0.87±0.09	5.36±2.46	0.76±0.26	1.14±0.36	1.98±1.14	3.22±2.55
	P-value DAUNet sMRI vs. DSUNet sMRI	0.002	0.541	0.074	0.065	0.017	0.091	0.147	0.049
	P-value DAUNet sMRI vs. DAUNet CBCT	<0.001	0.010	0.043	0.034	<0.001	0.006	<0.001	0.103
Rectum	DSUNet sMRI	0.86±0.042	0.85±0.07	0.89±0.07	9.96±5.52	1.32±2.27	2.63±5.17	4.83±4.99	7.14±9.95
	DAUNet CBCT	0.83±0.055	0.81±0.098	0.87±0.07	15.51±22.13	1.40±1.06	3.07±3.21	5.28±5.88	9.60±8.96
	DAUNet sMRI	0.92±0.03	0.91±0.02	0.93±0.02	5.20±1.61	0.62±0.15	1.24±1.01	1.94±1.29	3.70±4.18
	P-value DAUNet sMRI vs. DSUNet sMRI	<0.001	0.002	0.042	<0.001	0.128	0.161	0.007	0.065
	P-value DAUNet sMRI vs. DAUNet CBCT	<0.001	<0.001	0.007	0.031	<0.001	0.004	0.009	0.001