Table 1.

Quantitative evaluations of the automatic segmentation results with DSD‐UNET and 3D U‐Net for the HR‐CTV and OARs (Mean ± Standard deviation)

Metrics	Models	Regions of interest
		HR‐CTV	Bladder	Small intestine	Sigmoid	Rectum
DSC (%)	DSD‐UNET	82.9 ± 4.1	86.9 ± 3.2	80.3 ± 5.8	64.5 ± 7.9	82.1 ± 5.0
	3D U‐Net	74.2 ± 6.2	80.2 ± 4.1	75.1 ± 6.7	55.2 ± 8.6	77.1 ± 6.2
JI (%)	DSD‐UNET	72.2 ± 4.3	77.9 ± 3.5	69.4 ± 6.1	52.2 ± 8.3	71.5 ± 5.2
	3D U‐Net	60.2 ± 6.5	68.2 ± 4.6	61.9 ± 6.9	42.8 ± 8.8	64.3 ± 6.5
HD (mm)	DSD‐UNET	8.1 ± 2.3	12.1 ± 4.0	27.8 ± 10.8	19.6 ± 8.7	9.2 ± 4.6
	3D U‐Net	10.5 ± 2.9	16.3 ± 4.2	32.2 ± 11.9	23.4 ± 12.7	12.8 ± 6.0