title: The clinical utility of contrast-enhanced 3D MR angiography for cerebrovascular disease.
abstract: The purpose of this study was to evaluate the usefulness of contrast-enhanced 3D MR angiography (CE-MRA) with an automated bolus-detection algorithm (SmartPrep technique) and the specialized phased-array coils for the patients suspected cerebrovascular disease. Forty-three patients with brain attack were examined with CE-MRA. A tracker volume of SmartPrep technique was placed along the ascending aorta in the coronal image. After the bolus injection of gadolinium, an increase in signal that corresponded to the arrival of gadolinium was used to trigger centric re-ordered spoiled gradient echo arterial selective MRA with imaging time of 20-40 sec. We were able to achieve a 100% successful triggering rate of SmartPrep technique and selectively arterial-phase carotid and vertebral arteries with almost no venous contamination could be delineated. These techniques enabled high resolution imaging of entire craniocervical arteries from aortic arch to the circle of Willis. This CE-MRA was useful to evaluate both occlusion of arteries and the collateral pathways and to measure stenosis and residual flow of dissection accurately. CE-MRA was a reliable less-invasive alternative to investigate the patients of cerebrovascular disease.
authors.affiliation: Department of Neurosurgery, Inuyama Central Hospital, Aichi, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Okumura
authors.forename: Y
authors.initials: Y
authors.lastname: Araki
authors.forename: Y
authors.initials: Y
authors.lastname: Nishimura
authors.forename: T
authors.initials: T
authors.lastname: Iwama
authors.forename: Y
authors.initials: Y
authors.lastname: Kaku
authors.forename: M
authors.initials: M
authors.lastname: Furuichi
authors.forename: N
authors.initials: N
authors.lastname: Sakai
mesh_terms: D001921:Brain / Q000098:blood supply* / Q000473:pathology*; D002339:Carotid Arteries / Q000473:pathology / Q000503:physiopathology; D016893:Carotid Stenosis / Q000473:pathology / Q000503:physiopathology; D002536:Cerebral Arteries / Q000473:pathology* / Q000503:physiopathology; D002561:Cerebrovascular Disorders / Q000473:pathology* / Q000503:physiopathology; D003287:Contrast Media / Q000627:therapeutic use*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000295:instrumentation / Q000379:methods* / Q000639:trends; D020244:Infarction, Middle Cerebral Artery / Q000473:pathology / Q000503:physiopathology; D018810:Magnetic Resonance Angiography / Q000295:instrumentation / Q000379:methods* / Q000639:trends; D013348:Subclavian Artery / Q000473:pathology / Q000503:physiopathology; D014711:Vertebral Artery / Q000473:pathology / Q000503:physiopathology; D020217:Vertebral Artery Dissection / Q000473:pathology / Q000503:physiopathology
chemical_list: D003287:Contrast Media