Moyamoya Disease, Moyamoya Disease

In fact, the name derives from its angiographic image; the "puff of smoke," which is how moyamoya loosely translates from Japanese, refers to the appearance of multiple compensatorily dilated striate vessels seen on angiography. Contrast-enhanced T1-weighted images are better than FLAIR images for depicting the leptomeningeal ivy sign in Moyamoya disease. MRI and MRA should be performed for the diagnosis and follow-up of Moyamoya disease. Diffusion-weighted imaging can also be used for following the clinical course of children with Moyamoya disease, in whom new focal deficits are highly suspicious of new infarcts.

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