Fig. 5.

Tractography groupings of atherosclerotic plaque strips. (1) Predominantly circumferentially aligned tracts with sparce axial tracts on the luminal edge (concave side). (2) Predominantly circumferentially aligned tracts with the presence of a plaque cap shoulder – visible at the junction between fibres on the luminal side. (3) Circumferentially aligned medial tracts with large regions of mixed microstructural alignment on the luminal side and (4) overall mixed samples with no clear alignment. Red-green tracts indicate circumferential alignment, while blue is out-of-plane, axially aligned tracts.