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Axial lack-blood fast spin-echo images of the internal carotid artery (ICA) and external carotid artery (ECA). Comparison of images reveals no changes in relative signal intensity of the plaque. Hyperintense region is fibrous tissue, and hypointense spots are calcifications.
A, Proton density-weighted image. L = lumen.
B, Corresponding T2-weighted image. Plaque in the ICA is mainly hyperintense, with hypointense spots.
