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Fig. 2. —10-year-old girl with unilateral moyamoya disease.

A, Axial projected three-dimensional time-of-flight MR angiogram shows total occlusion of right distal internal carotid artery, anterior cerebral artery, and middle cerebral artery (MCA). Right MCA vascular supply is poor compared with uninvolved left side. Moyamoya vessels (MMVs) are prominent (arrows).