title: Duplicate origin of the anterior cerebral artery diagnosed by magnetic resonance angiography: a case report.
abstract: An anterior cerebral artery (ACA) of duplicate origin results from the fusion of two arteries that arise from the terminal segment of the internal carotid artery (ICA) to form a ring. This variation is extremely rare and differs from proximal ACA fenestration, supraclinoid fenestration of the ICA, and duplicate origin of the middle cerebral artery. We report a case diagnosed incidentally by magnetic resonance angiography.
authors.affiliation: Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan. auchino@saitama-med.ac.jp.
authors.forename: Akira
authors.initials: A
authors.lastname: Uchino
authors.affiliation: Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
authors.forename: Naoko
authors.initials: N
authors.lastname: Saito
authors.affiliation: Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
authors.forename: Yuito
authors.initials: Y
authors.lastname: Nagamine
authors.affiliation: Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Takao
mesh_terms: D000369:Aged, 80 and over; D063405:Anatomic Variation; D020771:Anterior Cerebral Artery / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D002343:Carotid Artery, Internal / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D002544:Cerebral Infarction / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D033162:Incidental Findings; D018810:Magnetic Resonance Angiography
keywords: Anterior cerebral artery; Arterial ring; Duplicate origin; Fenestration; Magnetic resonance angiography