title: Moyamoya disease: diagnosis with three-dimensional CT angiography.
abstract: Our purpose was to assess the value of three-dimensional (3D) CT angiography in the diagnosis of moyamoya disease. We studied seven patients with moyamoya disease proved by conventional angiography. Three-dimensional (3D) CT angiography was performed using rapid sequence or helical (spiral) scanning in conjunction with a bolus injection of intravenous contrast medium. All seven patients could be diagnosed as having moyamoya disease on the basis of the following 3D CT angiographic findings: poor visualisation of the main trunks and/or major branches of anterior and middle cerebral arteries (7 patients); dilated leptomeningeal anastomotic channels from the posterior cerebral arteries (4); and demonstration of "moyamoya vessels" in the basal ganglia (2). Although conventional angiography remains the principal imaging technique for demonstrating anatomical changes in detail, less invasive 3D CT angiography provides a solid means of diagnosing moyamoya disease when it is suspected on CT, MRI, or clinical grounds.
authors.affiliation: Department of Radiology, National Defense Medical College, Saitama, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Tsuchiya
authors.forename: K
authors.initials: K
authors.lastname: Makita
authors.forename: S
authors.initials: S
authors.lastname: Furui
mesh_terms: D000293:Adolescent; D000328:Adult; D001479:Basal Ganglia / Q000098:blood supply; D002545:Brain Ischemia / Q000000981:diagnostic imaging*; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D016893:Carotid Stenosis / Q000000981:diagnostic imaging; D002533:Cerebral Angiography / Q000379:methods*; D002648:Child; D003097:Collateral Circulation / Q000502:physiology; D004388:Dura Mater / Q000098:blood supply; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*; D008297:Male; D008578:Meninges / Q000098:blood supply; D008875:Middle Aged; D009072:Moyamoya Disease / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*