title: Bilateral anterior cerebral artery territory infarction associated with unilateral hypoplasia of the A1 segment: report of two cases.
abstract: We report two cases of bilateral anterior cerebral artery (ACA) territory infarction. On magnetic resonance (MR) angiograms, the A1 segment of the ACA was unilaterally hypoplastic in both cases, suggesting that unilateral hypoplasia of A1 is a significant predisposing factor for this rare type of cerebral infarction. When the contralateral A1 is dominant, embolic materials may enter into it more easily.
authors.affiliation: Department of Radiology, Saga Medical School, Saga, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Akira
authors.initials: A
authors.lastname: Uchino
authors.forename: Akihiro
authors.initials: A
authors.lastname: Sawada
authors.forename: Yukinori
authors.initials: Y
authors.lastname: Takase
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Kuroda
authors.forename: Shou
authors.initials: S
authors.lastname: Kudo
mesh_terms: D000368:Aged; D020771:Anterior Cerebral Artery / Q000002:abnormalities*; D006801:Humans; D007089:Image Enhancement; D020243:Infarction, Anterior Cerebral Artery / Q000175:diagnosis / Q000209:etiology*; D020766:Intracranial Embolism / Q000175:diagnosis; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012307:Risk Factors