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Assessment of Carotid Artery Patency on Routine Spin-Echo MR Imaging of the Brain AJR 157:1299-1306, 13071991., Lane,J.I.,et al, 1991 See this aricle in Pubmed Article Abstract We retrospectively reviewed the routine spin-echo MR studies of the brain in 12 patients with 13 angiographically demonstrated occlusions and in 14 patients with 16 high-grade stenoses of the carotid arteries.Intraluminal signal that was isointense with adjacent brain on long TR/short TE and long TR/long TE images was 100%specific for atherosclerotic occlusion.Of the 13 proved occlusions,six(46%)had significant degrees of hyperintense intraluminal signal distinguishable from that observed consequent to slow flow distal to high-grade stenoses.MR detected only five(31%)of the 16 proved high-grade stenoses.Normal flow void does not exclude significant extracranial carotid stenosis.Occlusion cannot always be distinguished from high-grade stenosis when hyperintense intraluminal signal is encountered.However,a reliable diagnosis of atherosclerotic occlusion can be made when isointense intraluminal signal is observed.

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(click to filter results - removes previous filter) carotid angiogram carotid artery carotid artery atherosclerosis carotid artery disease carotid artery occlusion,neck carotid artery stenosis MRI MRI,abnormal MRI,flow void,blood

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