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Plaque ulceration. Sagittal reformations of CTA (A) and contrast-enhanced MRA (B) demonstrate large plaque ulcerations (white arrow and arrowhead) in the proximal ICAs in two different patients. Carotid US (C) demonstrating Doppler flow (curved arrow) within a large echolucent plaque in the proximal ICA, compatible with large plaque ulceration.
