title: True fenestration of the anterior communicating artery diagnosed by magnetic resonance angiography.
abstract: Variations of the anterior cerebral artery-anterior communicating artery (ACoA) complex are common. Most are duplicated or partially duplicated ACoAs that are confused with fenestration of the ACoA. We report here an extremely rare case of true fenestration of the ACoA diagnosed by magnetic resonance angiography. Tiny true fenestrations of the ACoA may be overlooked easily by MR angiography. Partial maximum-intensity-projection image and volume-rendering image are useful in identifying true fenestration of the ACoA.
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 Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Uehara
authors.affiliation: Department of Intravascular Neurosurgery, Saitama Medical University International Medical Center, Hidaka, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Neki
authors.affiliation: Department of Intravascular Neurosurgery, Saitama Medical University International Medical Center, Hidaka, Japan.
authors.forename: Sinya
authors.initials: S
authors.lastname: Kohyama
authors.affiliation: Department of Intravascular Neurosurgery, Saitama Medical University International Medical Center, Hidaka, Japan.
authors.forename: Fumitaka
authors.initials: F
authors.lastname: Yamane
mesh_terms: D000328:Adult; D020771:Anterior Cerebral Artery / Q000000981:diagnostic imaging; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*; D018810:Magnetic Resonance Angiography; D008297:Male; D009880:Ophthalmic Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging
keywords: Anterior communicating artery; Cerebral arterial variation; Duplication; Fenestration; Magnetic resonance angiography