Table III.

Numerical results of the prostate apex and base calculated between manual contour and segmented contour via comparing methods and proposed method on fivefold cross-validation test (CV) and hold-out test (HO).

Organ	Test	Method	DSC	HD95 (mm)	MSD (mm)	CMD (mm)	VD (cc)
Apex	CV	U-Net	0.79 ± 0.09	2.35 ± 1.07	0.51 ± 0.32	1.77 ± 0.86	0.80 ± 0.75
		Mask R-CNN	0.84 ± 0.08	1.95 ± 0.90	0.37 ± 0.27	1.48 ± 0.71	0.63 ± 0.64
		Proposed	0.86 ± 0.08	1.65 ± 0.84	0.29 ± 0.23	1.27 ± 0.62	0.50 ± 0.57
	HO	U-Net	0.85 ± 0.10	2.10 ± 0.94	0.41 ± 0.28	1.47 ± 1.11	0.77 ± 0.83
		Mask R-CNN	0.88 ± 0.08	1.67 ± 0.86	0.30 ± 0.22	1.19 ± 0.83	0.63 ± 0.69
		Proposed	0.90 ± 0.07	1.39 ± 0.86	0.23 ± 0.19	1.00 ± 0.66	0.52 ± 0.59
Base	CV	U-Net	0.77 ± 0.12	2.88 ± 1.30	0.74 ± 0.46	1.92 ± 0.86	1.00 ± 0.74
		Mask R-CNN	0.82 ± 0.10	2.54 ± 1.18	0.57 ± 0.36	1.59 ± 0.72	0.84 ± 0.62
		Proposed	0.85 ± 0.09	2.3 ± 1.09	0.47 ± 0.30	1.37 ± 0.63	0.71 ± 0.55
	HO	U-Net	0.77 ± 0.14	2.98 ± 1.37	0.72 ± 0.51	2.19 ± 1.34	0.90 ± 0.81
		Mask R-CNN	0.83 ± 0.12	2.55 ± 1.26	0.54 ± 0.41	1.79 ± 1.14	0.74 ± 0.67
		Proposed	0.86 ± 0.10	2.20 ± 1.17	0.43 ± 0.34	1.52 ± 0.98	0.63 ± 0.56