FIG 2. Axial lack-blood fast spin-echo images of the ICA (arrow). Plaque in the ICA is hyperintense. L = lumen.

A and B, Proton density-weighted (A) and corresponding T2-weighted (B) images. Large region of the plaque has intermediate signal intensity, with hyperintense edges.

C and D, Another patient. Proton density-weighted (C) and corresponding T2-weighted (D) images. Plaque in the ICA has a large region of intermediate signal intensity, which is relatively decreased in D, while the rest of the plaque remains hyperintense.