Table 3.

The segmentation comparison between U-Net and U-Net-GAN, the proposed method, with the mean and standard deviation of DSC, Sensitivity, Specificity, HD95, MSD and RMSD listed.

		Esophagus	Heart	Left Lung	Right Lung	Spinal Cord
DSC	U-Net	0.71±0.08	0.85±0.05	0.97±0.01	0.96±0.01	0.83±0.05
	U-Net-GAN	0.75±0.08	0.87±0.05	0.97±0.01	0.97±0.01	0.90±0.04
Sensitivity	U-Net	0.71±0.09	0.94±0.05	0.97±0.02	0.96±0.02	0.97±0.01
	U-Net-GAN	0.73±0.10	0.89±0.07	0.97±0.02	0.96±0.02	0.93±0.03
Specificity	U-Net	0.9996±0.0002	0.9958±0.0029	0.9989±0.0010	0.9992±0.0007	0.9995±0.0001
	U-Net-GAN	0.9997±0.0001	0.9977±0.0020	0.9989±0.0010	0.9992±0.0007	0.9998±0.00001
HD95 (mm)	U-Net	4.91±4.13	6.45±4.03	2.07±1.92	2.50±3.33	1.98±1.52
	U-Net-GAN	4.52±3.81	4.58±3.67	2.07±1.93	2.50±3.34	1.19±0.46
MSD (mm)	U-Net	1.09±0.67	1.91±0.95	0.61±0.73	0.65±0.53	0.54±0.29
	U-Net-GAN	1.05±0.66	1.49±0.85	0.61±0.73	0.65±0.53	0.38±0.27
RMSD (mm)	U-Net	2.37±1.40	3.68±2.24	2.12±2.32	2.66±2.45	1.08±1.32
	U-Net-GAN	2.24±1.36	3.14±2.19	2.12±2.32	2.66±2.46	0.82±0.85