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Multiparametric MRI and ultrasound findings in patients with internal carotid artery dissection

From the Department of Neurology, Universitätsklinikum Mannheim, University of Heidelberg, Mannheim, Germany

In this study, clinical, MRI, and ultrasound findings in 33 patients with 37 MRI-confirmed internal carotid artery dissections (ICADs) were investigated. In 24 of 37 (64.9%) diffusion-weighted MRI (DWI) revealed acute ischemic brain lesions. ICADs with subsequent DWI lesions usually had a concentric position of the mural hematoma (14 of 24;58.3%). In contrast, ICADs without DWI lesions (13 of 37;35.1%) demonstrated an eccentric position of the mural hematoma (10 of 13;76.9%), sometimes without ultrasound abnormality (5 of 13;38.5%), while nonischemic clinical signs were frequent (11 of 13;84.6%). A hemodynamic stroke pattern with comparatively large ischemic lesions along the hemodynamic risk zones was noted in 7 of 24 patients (29.2%).

Disclosure: The authors report no conflicts of interest.

Received August 19, 2004. Accepted in final form April 25, 2005.

Address correspondence and reprint request to Dr. Oliver Lanczik, Department of Neurology, Universitätsklinikum Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.

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