title: Retrograde filling of the anterior choroidal artery: vertebral angiographic sign of obstruction in the carotid system.
abstract: Retrograde filling of seven anterior choroidal arteries from the posterior circulation was observed on a vertebral angiogram in six patients with occlusion of the proximal anterior choroidal artery or of the internal carotid artery. In one patient with thrombotic occlusion of the internal carotid artery, the enlarged anterior choroidal artery functioned as a major collateral pathway from the posterior circulation to the territory of the middle cerebral artery. Retrograde filling of the anterior choroidal artery is a sign of obstruction changes in the ipsilateral carotid artery at or proximal to the origin of the anterior choroidal artery.
authors.affiliation: Department of Radiology, Tohoku University School of Medicine, Sendai, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Takahashi
authors.forename: M
authors.initials: M
authors.lastname: Tobita
authors.forename: A
authors.initials: A
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Sakamoto
mesh_terms: D000293:Adolescent; D000328:Adult; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D016893:Carotid Stenosis / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography; D002544:Cerebral Infarction / Q000000981:diagnostic imaging*; D002648:Child; D002831:Choroid Plexus / Q000098:blood supply*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging; D002542:Intracranial Embolism and Thrombosis / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D009072:Moyamoya Disease / Q000000981:diagnostic imaging; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging; D014390:Tuberculosis, Meningeal / Q000000981:diagnostic imaging; D014711:Vertebral Artery / Q000000981:diagnostic imaging*