Table 1.

Quantitative metrics for the organ-at-risk segmentation.

OAR	DSC		HD (pixel)
	Mean ± SD	Pass criterion	Mean ± SD	Pass criterion
Heart	0.95 ± 0.03	>0.89	7.2 ± 4.1	<15.2
Esophagus	0.69 ± 0.13	>0.44	4.6 ± 2.4	<9.3
Spinal cord	0.86 ± 0.06	>0.75	2.0 ± 0.7	<3.4
Lung, left	0.96 ± 0.04	>0.88	7.3 ± 6.1	<19.3
Lung, right	0.96 ± 0.04	>0.88	7.3 ± 4.7	<16.5

OAR, organ at risk; DSC, Dice similarity coefficient; HD, Hausdorff distance.