Table 2. Segmentation accuracy.

Set agreement metrics (mean ± std)				Distance-based metrics [mm] (mean ± std)
DSC	FNR	JAC		SYM	RMS-SYM	M-HAUS
0.976±0.006	0.030±0.010	0.953±0.011		0.203±0.057	0.521±0.135	0.219±0.071

DSC, dice similarity coefficient; FNR, false negative rate; JAC, Jaccard index; SYM, average symmetric distance; RMS-SYM, root-mean-square average symmetric distance; M-HAUS, modified Hausdorff distance. N=80 (50 scans from site A, 30 scans from site B; all from manufacturer A).