title: Ophthalmic artery arising from the anterior cerebral artery diagnosed by MR angiography.
abstract: Extremely rarely, the ophthalmic artery (OphA) arises from the A1 segment of the anterior cerebral artery (ACA). Discovery of this anomalous OphA during angiography or surgery has been reported in several patients. We report a case in which an OphA of ACA origin was diagnosed by magnetic resonance (MR) angiography and confirmed by selective cerebral angiography. To our knowledge, this is the first report of this variation with MR angiography. Careful observation of MR angiographic images is important for detecting rare arterial variations. Partial maximum-intensity-projection images are useful in identifying tiny anomalous arteries on MR angiography.
authors: Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan. auchino@saitama-med.ac.jp.
authors: Akira
authors: A
authors: Uchino
authors: Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
authors: Naoko
authors: N
authors: Saito
authors: Department of Intravascular Neurosurgery, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Japan.
authors: Shunsuke
authors: S
authors: Ikeda
authors: Department of Intravascular Neurosurgery, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Japan.
authors: Shoichiro
authors: S
authors: Ishihara
mesh_terms: D020771:Anterior Cerebral Artery / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000033:anatomy & histology*
keywords: Anterior cerebral artery; Cerebral arterial variation; Magnetic resonance angiography; Ophthalmic artery
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