Figure 3
Top Row: Two simulated patterns illustrating how the normalized join counts are calculated where the different types of joins are marked with different colored lines intersecting the shared edges. Both patterns have the same number of LAA voxels (red), but one was generated by a homogeneous process (A) while the other was generated using a single multivariate normal distribution (B), hence the large difference in NJC (3% in A vs 11% in B). Bottom Row: Panels (C,D) have the two example CT slices used in Figs. 1 and 2 where the zoomed in boxes show the the LAA-to-LAA joins in yellow. LAA low attenuation area, N normal, NJC normalized join-count.
