Table 6.

Lung Segmentation Accuracy for the JSRT and Montgomery Dataset

	Adult (n = 247)			Montgomery (n = 138)
	Dice (mean)	Dice (min)	Standard Deviation	Dice (mean)	Dice (min)	Standard Deviation
TVAC	0.9501	0.8488	0.0297	0.9569	0.8566	0.0251
U-Net	0.9817	0.9500	0.0012	0.9694	0.8442	0.0267
Random Walker	0.8809	0.4973	0.0576	0.8783	0.5084	0.0729
Active Spline	0.8790	0.0001	0.0783	0.8672	0.3835	0.0826

Data are mean with minimum and standard deviation reported for each algorithm on different patient populations. TVAC = Total Variation-based Active Contour, Dice = Sørensen–Dice coefficient, ARDS = acute respiratory distress syndrome