TABLE 2.

Results of paired student t-test (p-value) among the computed tomography (CT)-only, U-net, and the proposed methods on in-house dataset

Organ	Method	HD95	MS.	RMS
Brain Stem	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-net	0.93	<0.01	<0.01
Left Cochlea	Proposed vs CT-only	0.05	0.47	0.46
	Proposed vs U-net	0.36	0.09	0.07
Right Cochlea	Proposed vs CT-only	0.89	0.07	0.08
	Proposed vs U-net	0.79	0.30	0.06
Esophagus	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-net	0.66	0.06	0.06
Left Eye	Proposed vs CT-only	0.06	0.11	0.97
	Proposed vs U-net	0.06	0.07	0.81
Right Eye	Proposed vs CT-only	0.27	0.35	0.95
	Proposed vs U-net	0.08	0.17	0.62
Larynx	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-net	<0.01	0.01	<0.01
Left Lens	Proposed vs CT-only	0.17	0.31	0.20
	Proposed vs U-net	0.04	0.01	0.04
Right Lens	Proposed vs CT-only	0.52	0.30	0.36
	Proposed vs U-.et	0.04	<0.01	0.01
Mandible	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-net	0.72	0.06	0.59
Optic Chiasm	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-n.t	0.64	0.05	0.05
Left Optic Nerve	Proposed vs CT-only	0.13	0.40	0.06
	Proposed vs U-net	0.09	0.07	0.06
Right Optic Nerve	Proposed vs CT-only	0.31	0.63	0.19
	Proposed vs U-net	0.37	0.19	0.15
Oral Cavity	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-net	<0.01	0.02	<0.01
Left Parotid	Proposed vs CT-only	0.74	0.05	0.26
	Proposed vs U-net	0.03	0.03	0.04
Right Parotid	Proposed vs CT-only	0.12	0.09	0.71
	Proposed vs U-net	0.02	0.01	0.04
Pharynx	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-net	<0.01	<0.01	<0.01
Spinal Cord	Proposed vs CT-only	<0.01	<0.01	<0.01
	Proposed vs U-ne1	<0.01	<0.01	<0.01