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Moyamoya Phenomenon Secondary to Intracranial Atherosclerotic Disease: Diagnosis by 3T Magnetic Resonance Imaging |
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| Authors: | William W. Ashley Jr. MD PhD MBA Gregory J. Zipfel MD Christopher J. Moran MD Jie Zheng PhD Colin P. Derdeyn MD |
| Affiliation: | From the Washington University School of Medicine, Department of Neurological Surgery (WWA, GJZ, CJM, CPD);Department of Neurology (GJZ, CPD);Mallinckrodt Institute of Radiology (CJM, JZ, CPD). [Correction added after online publication 14-September-2009: Received date has been corrected.] |
| Abstract: | Moyamoya phenomenon occurs in response to an occlusive vasculopathy affecting the distal internal carotid artery and its proximal branches. The nature of the occlusive vasculopathy is unknown in most patients. We present a patient in whom 3T magnetic resonance imaging was used to examine the arterial wall at the site of occlusion in a patient with unilateral moyamoya phenomenon. Signal characteristics were consistent with atherosclerotic disease. 3T magnetic resonance imaging may be useful for distinguishing the underlying etiology of moyamoya phenomenon in some patients. |
| Keywords: | Moyamoya atherosclerosis stroke MRI |