NeuroImages Figure. (A) Three-dimensional conventional gadolinium enhanced MR angiography demonstrating an irregular stenosis of the left common artery (small white arrows). (B) Gadolinium enhanced black blood T1-weighted turbo spin echo MRI perpendicular to the common carotid artery axis showing a large plaque (black arrows) associated with an intraluminal thrombus (white arrow). High-resolution MRI of isolated intraluminal clot of the common carotid artery L. Boussel, MD; P. Douek, MD, PhD; and N. Nighoghossian, MD, PhD, Lyon, France A 60-year-old man developed an acute right hemiparesis with aphasia. He had hypertension and high cholesterol level. Neck ultrasound and conventional MR angiography showed a moderate Disclosure: The authors report no conflicts of interest. Address correspondence and reprint requests to Dr. Douek Philippe, Service de Radiologie, Hôpital Cardiologique Louis Pradel, 28 avenue du Doyen Lépine, 69677 Bron, France; e-mail: philippe.douek@creatis.univ-lyon1.fr 788 Copyright © 2007 by AAN Enterprises, Inc. left common carotid artery stenosis (figure, A). High-resolution MRI, performed at 1.5 Tesla using a post gadolinium T1-weighted EKG triggered black blood turbo spin echo sequence, revealed a large heterogeneous plaque with a high-intensity intraluminal thrombus (figure, B). Prothrombotic state screening was negative. Clot of common carotid artery is rare. Conventional gadolinium enhanced MR angiography may miss the clot. High-resolution MRI may better identify1 the atheromatous plaque with intraluminal thrombus. 1. Kampschulte A, Ferguson MS, Kerwin WS, et al. Differentiation of intraplaque versus juxtaluminal hemorrhage/thrombus in advanced human carotid atherosclerotic lesions by in vivo magnetic resonance imaging. Circulation 2004;110:3239–3244. High-resolution MRI of isolated intraluminal clot of the common carotid artery L. Boussel, P. Douek and N. Nighoghossian Neurology 2007;68;788 DOI 10.1212/01.wnl.0000256342.99552.7e This information is current as of March 5, 2007 Updated Information & Services including high resolution figures, can be found at: http://www.neurology.org/content/68/10/788.full.html Supplementary Material Supplementary material can be found at: http://www.neurology.org/content/suppl/2007/11/08/68.10.788.DC1.ht ml References This article cites 1 articles, 1 of which you can access for free at: http://www.neurology.org/content/68/10/788.full.html##ref-list-1 Citations This article has been cited by 2 HighWire-hosted articles: http://www.neurology.org/content/68/10/788.full.html##otherarticles Subspecialty Collections This article, along with others on similar topics, appears in the following collection(s): All Cerebrovascular disease/Stroke http://www.neurology.org//cgi/collection/all_cerebrovascular_disease_ stroke Infarction http://www.neurology.org//cgi/collection/infarction MRI http://www.neurology.org//cgi/collection/mri Permissions & Licensing Information about reproducing this article in parts (figures,tables) or in its entirety can be found online at: http://www.neurology.org/misc/about.xhtml#permissions Reprints Information about ordering reprints can be found online: http://www.neurology.org/misc/addir.xhtml#reprintsus Neurology ® is the official journal of the American Academy of Neurology. Published continuously since 1951, it is now a weekly with 48 issues per year. Copyright . All rights reserved. Print ISSN: 0028-3878. Online ISSN: 1526-632X.