TABLE 1.

Dice similarity coefficient (DSC) comparison of the proposed, computed tomography (CT)-only, and U-net methods on in-house dataset

Organ	I. Proposed	II. CT-only	III. U-net	p value (I vs II)	p value (I vs III)
Brain Stem	0.90±0.06	0.86±0.06	0.87±0.04	<0.01	<0.01
Left Cochlea	0.67±0.21	0.66±0.19	0.60±0.26	0.14	0.07
Right Cochlea	0.67±0.21	0.66±0.18	0.60±0.24	0.13	0.07
Esophagus	0.85±0.12	0.81±0.12	0.84±0.07	<0.01	0.19
Left Eye	0.78±0.23	0.78±0.25	0.74±0.28	0.84	0.40
Right Eye	0.76±0.26	0.76±0.27	0.72±0.30	0.99	0.37
Larynx	0.88±0.10	0.82±0.17	0.84±0.17	<0.01	0.03
Left Lnns	0.79±0.10	0.77±0.14	0.71±0.19	0.38	<0.01
Right nens	0.77±0.10	0.75±0.12	0.62±0.25	0.29	<0.01
Mandible	0.89±0.10	0.85±0.10	0.88±0.08	<0.01	0.22
Optic Chiasm	0.58±0.25	0.50±0.24	0.54±0.20	<0.01	0.12
Left Optic Nerve	0.66±0.17	0.64±0.19	0.63±0.22	0.42	0.24
Right Optic Nerve	0.66±0.20	0.63±0.20	0.60±0.23	0.40	0.06
Oral Cavity	0.89±0.10	0.83±0.12	0.85±0.12	<0.01	0.02
Left Parotid	0.83±0.09	0.83±0.09	0.75±0.27	0.49	0.02
Right Parotid	0.82±0.13	0.82±0.14	0.75±0.25	0.47	0.04
Pharynx	0.68±0.27	0.62±0.28	0.65±0.27	<0.01	<0.01
Spinal Cord	0.86±0.07	0.82±0.08	0.84±0.05	<0.01	<0.01

Note: Bold indicates the best performance achieved among the comparing methods.