Table 2.

Hausdorff distance (mm) of the OARs segmentation

OARs	Methods				P‐value
					ANOVA	LSD test
	1. SRD	2. FSU	3. U‐Net	4. CNN Cascades		4 vs 1	4 vs 2	4 vs 3
Brainstem	3.9 ± 0.5	3.4 ± 0.3	4.3 ± 0.7	2.9 ± 0.3	<0.001	<0.001	=0.017	<0.001
Spinal Cord	2.3 ± 0.3	2.2 ± 0.3	2.4 ± 0.4	1.7 ± 0.2	<0.001	<0.001	<0.001	<0.001
Left Eye	2.3 ± 0.4	2.0 ± 0.4	2.6 ± 0.6	1.7 ± 0.3	<0.001	<0.001	=0.062	<0.001
Right Eye	2.5 ± 0.5	2.1 ± 0.4	2.7 ± 0.6	1.8 ± 0.3	=0.001	=0.004	=0.152	<0.001
Left Parotid	6.4 ± 1.4	5.9 ± 1.4	7.0 ± 1.6	5.1 ± 1.1	=0.002	=0.008	=0.130	<0.001
Right Parotid	7.1 ± 1.5	6.5 ± 1.4	7.6 ± 1.5	5.4 ± 1.1	=0.001	=0.002	=0.045	<0.001
Mandible	3.2 ± 0.4	3.0 ± 0.4	4.0 ± 1.0	2.4 ± 0.4	<0.001	=0.001	=0.022	<0.001