Table 1.

Overall quantitative results achieved by the proposed, CBCT-only, U-net, and DA-FCN methods.

Organ	Method	DSC	HD95 (mm)	MSD (mm)	RMS (mm)
Large Bowel	Ⅰ. Proposed	0.91±0.06	4.19±3.94	1.36±1.24	2.10±1.83
	Ⅱ. CBCT-only	0.90±0.07	4.54±3.43	1.40±1.11	2.27±1.62
	Ⅲ. U-net	0.89±0.04	5.30±2.95	1.70±0.91	2.63±1.40
	IV. DA-FCN	0.90±0.04	5.23±2.55	1.67±0.94	2.56±1.25
	p value (Ⅰ vs. Ⅱ)	0.20	0.06	0.45	0.07
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	0.06	0.01	<0.01	0.04
Small Bowel	Ⅰ. Proposed	0.92±0.05	2.69±1.79	0.82±0.57	1.45±0.95
	Ⅱ. CBCT-only	0.90±0.04	3.53±1.72	1.01±0.48	1.79±0.76
	Ⅲ. U-net	0.86±0.06	5.13±2.04	1.56±0.59	2.58±1.00
	IV. DA-FCN	0.86±0.05	5.08±1.53	1.52±0.43	2.53±0.72
	p value (Ⅰ vs. Ⅱ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	<0.01	<0.01	<0.01
Duodenum	Ⅰ. Proposed	0.89±0.13	2.86±3.30	0.90±1.13	1.39±1.51
	Ⅱ. CBCT-only	0.88±0.13	3.25±2.89	1.02±1.04	1.62±1.43
	Ⅲ. U-net	0.84±0.12	4.59±3.06	1.48±1.05	2.27±1.41
	IV. DA-FCN	0.84±0.09	4.54±2.16	1.47±0.80	2.25±1.21
	p value (Ⅰ vs. Ⅱ)	<0.01	0.04	<0.01	<0.01
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	<0.01	<0.01	<0.01
Left Kidney	Ⅰ. Proposed	0.95±0.03	2.72±1.91	0.77±0.51	1.28±0.80
	Ⅱ. CBCT-only	0.94±0.04	3.11±2.51	0.86±0.63	1.46±0.99
	Ⅲ. U-net	0.93±0.03	3.55±1.79	1.12±0.47	1.79±0.83
	IV. DA-FCN	0.94±0.03	3.47±1.60	1.06±0.40	1.75±0.74
	p value (Ⅰ vs. Ⅱ)	0.03	0.03	0.02	0.01
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	<0.01	<0.01	<0.01
Right Kidney	Ⅰ. Proposed	0.95±0.02	2.70±1.63	0.77±0.43	1.28±0.70
	Ⅱ. CBCT-only	0.94±0.03	3.18±2.29	0.86±0.51	1.48±0.90
	Ⅲ. U-net	0.93±0.02	3.35±1.87	1.04±0.40	1.70±0.78
	IV. DA-FCN	0.94±0.02	3.26±1.30	1.00±0.35	1.64±0.62
	p value (Ⅰ vs. Ⅱ)	0.04	0.03	0.02	0.01
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	<0.01	<0.01	<0.01
Liver	Ⅰ. Proposed	0.97±0.03	3.30±3.71	0.95±1.23	1.64 ±1.62
	Ⅱ. CBCT-only	0.96±0.04	3.57±3.51	0.95±0.98	1.86±1.63
	Ⅲ. U-net	0.95±0.03	4.30±2.80	1.22±0.81	2.16±1.22
	IV. DA-FCN	0.95±0.02	4.28±1.30	1.20±0.54	2.02±0.43
	p value (Ⅰ vs. Ⅱ)	0.18	0.05	0.89	0.21
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	0.02	0.16	0.16
Spinal Cord	Ⅰ. Proposed	0.90±0.10	1.63±1.35	0.61±0.51	0.90±0.62
	Ⅱ. CBCT-only	0.89±0.09	1.93±1.17	0.68±0.49	1.00±0.63
	Ⅲ. U-net	0.85±0.08	2.33±1.02	0.86±0.44	1.18±0.52
	IV. DA-FCN	0.86±0.07	2.33±0.75	0.84±0.38	1.16±0.43
	p value (Ⅰ vs. Ⅱ)	0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	<0.01	<0.01	<0.01
Stomach	Ⅰ. Proposed	0.94±0.09	3.08±3.84	0.90±1.44	1.43±1.91
	Ⅱ. CBCT-only	0.92±0.11	3.91±4.83	1.20±1.61	1.92±2.23
	Ⅲ. U-net	0.91±0.09	3.97±3.49	1.61±1.28	1.97±1.69
	IV. DA-FCN	0.92±0.03	3.89±2.07	1.24±1.11	1.95±1.53
	p value (Ⅰ vs. Ⅱ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. Ⅲ)	<0.01	<0.01	<0.01	<0.01
	p value (Ⅰ vs. IV)	<0.01	<0.01	<0.01	<0.01