Fig. 8.

The coefficient of variation (%) for repeat variability $v{(iii)}_{j,s}$ (gray), intraprotocol variability $v{(ii)}_{j,s}$ (blue striped), and ground-truth variability $v{(i)}_j$ (black) for $s=$ active contour and for $j=$ low spiculation (a), $j=$ medium spiculation (b), and $j=$ high spiculation (c). In all cases, the repeat variability $v(iii{)}_{j,s}$ (gray) is the smallest value of the three variabilities with a maximum value of 10% and a minimum value of 0.30%. The intraprotocol variability and ground-truth variability are usually comparable, although in the cases where the ground-truth variability $v{(i)}_j$ is comparatively large, the intraprotocol variability $v(ii{)}_{j,s}$ is smaller than $v(i{)}_j$, particularly for the case of the medium spiculation compactness 2 feature.