Abstract #2671

Kanagaki M, Miki Y, Yamamoto A, Kitamura E, Fushimi Y, Okada T, Mori N, Kikuta K, Miyamoto S, Hashimoto N, Sugimura K, Togashi K

To our knowledge, dilated medullary vessels in moyamoya disease have not been investigated in detail nor completely understood. Flow-compensation is a way to rephrase the MR signal of moving spins and is useful to visualize small vessels on gadolinium-enhanced MR images. In this study, we investigated frequency of visualization of dilated medullary vessels in moyamoya disease and the effect of flow-compensation technique on the visualization of dilated vessels. The results suggest that dilated medullary vessels are frequently observed on gadolinium-enhanced MRI, which are better visualized with use of flow-compensation technique.