Table 2.

Network performance with reference to ground truth. Weighted foreground IoU for each network variant is calculated for all views combined and for each view separately, and is reported as median [interquartile range]. Network performance was highest in the SA view and lowest in the 4C view, though these differences are small.

Name	View	U-Net 0	U-Net 1	U-Net 2	U-Net 3
Network A	All	0.834 [0.783, 0.871]	–	–	–
	SA	0.843 [0.789, 0.880]	–	–	–
	4C	0.819 [0.765, 0.855]	–	–	–
	2C	0.831 [0.788, 0.863]	–	–	–
Network B	All	0.841 [0.793, 0.876]	0.857 [0.819, 0.885]	–	–
	SA	0.848 [0.800, 0.884]	0.862 [0.820, 0.891]	–	–
	4C	0.831 [0.780, 0.861]	0.845 [0.812, 0.871]	–	–
	2C	0.832 [0.787, 0.864]	0.856 [0.822, 0.882]	–	–
Network C	All	0.841 [0.792, 0.875]	0.856 [0.816, 0.884]	0.857 [0.816, 0.885]	–
	SA	0.849 [0.797, 0.883]	0.862 [0.820, 0.890]	0.862 [0.819, 0.890]	–
	4C	0.830 [0.779, 0.861]	0.843 [0.804, 0.869]	0.844 [0.805, 0.869]	–
	2C	0.830 [0.793, 0.863]	0.855 [0.818, 0.883]	0.857 [0.819, 0.884]	–
Network D	All	0.844 [0.797, 0.877]	0.856 [0.819, 0.884]	0.858 [0.821, 0.886]	0.858 [0.821, 0.886]
	SA	0.851 [0.798, 0.886]	0.862 [0.821, 0.890]	0.863 [0.822, 0.892]	0.863 [0.822, 0.892]
	4C	0.832 [0.781, 0.861]	0.839 [0.805, 0.868]	0.843 [0.811, 0.870]	0.843 [0.811, 0.869]
	2C	0.842 [0.804, 0.869]	0.858 [0.828, 0.884]	0.860 [0.831, 0.886]	0.859 [0.830, 0.886]