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

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%).