title: "Pseudoocclusion" of the internal carotid artery: a pitfall on intracranial MRA.
abstract: We report a case showing "pseudoocclusion" of the internal carotid artery as a pitfall on intracranial MRA. Pseudoocclusion was attributed to magnetic susceptibility artifacts with metallic substances located proximal to a slab. The same finding could be reproduced on experimental MRA with a small steel coil applied on the anterior neck of a volunteer at the level of the carotid bifurcation.
authors.affiliation: Department of Radiology, School of Medicine, Niigata University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Okamoto
authors.forename: J
authors.initials: J
authors.lastname: Ito
authors.forename: T
authors.initials: T
authors.lastname: Furusawa
authors.forename: K
authors.initials: K
authors.lastname: Sakai
authors.forename: S
authors.initials: S
authors.lastname: Tokiguchi
mesh_terms: D000328:Adult; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D016477:Artifacts; D001932:Brain Neoplasms / Q000175:diagnosis / Q000556:secondary; D002340:Carotid Artery Diseases / Q000175:diagnosis*; D002343:Carotid Artery, Internal / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006429:Hemiplegia / Q000175:diagnosis; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000295:instrumentation; D008280:Magnetics; D008670:Metals; D015203:Reproducibility of Results; D013232:Steel; D014474:Unconsciousness / Q000175:diagnosis
chemical_list: D008670:Metals; D013232:Steel