Figure 1.

CTA studies showing lumen geometry in the longitudinal plane (left) and transverse to the lumen for slices 1 and 2 (right) at (a) baseline, without plaque rupture distal to the bifurcation. Note the irregular lumen geometry proximal to the bifurcation, suggesting existing ulceration of common carotid artery plaque. (b) Eight-month follow-up. Slice 1 shows increased lumen area in the internal carotid artery consistent with plaque rupture, while slice 2 shows that a portion of the plaque core inferior to the rupture location has emptied after fibrous cap failure