title: Randomly segmented central k-space ordering in high-spatial-resolution contrast-enhanced MR angiography of the supraaortic arteries: initial experience.
abstract: Contrast material-enhanced three-dimensional (3D) magnetic resonance (MR) angiography of the supraaortic arteries with randomly segmented central k-space ordering (ie, contrast-enhanced timing-robust angiography [CENTRA]) was performed in 16 patients. CENTRA enabled reliable depiction of the aortic arch up to the circle of Willis at high spatial resolution (true voxel size, 0.81 x 0.81 x 1.0 mm(3)). With CENTRA, the divergent demands of high spatial resolution, wide anatomic coverage, and arterial phase imaging have been reconciled. The random order of central k-space acquisition may minimize artifacts in contrast-enhanced 3D MR angiography caused by unstable contrast material opacification at the initiation of sampling.
authors.affiliation: Department of Radiology, University of Bonn, Sigmund-Freud-Strasse 25, D-53105 Bonn, Germany. willinek@uni-bonn.de
authors.forename: Winfried A
authors.initials: WA
authors.lastname: Willinek
authors.forename: Jürgen
authors.initials: J
authors.lastname: Gieseke
authors.forename: Rudolf
authors.initials: R
authors.lastname: Conrad
authors.forename: Holger
authors.initials: H
authors.lastname: Strunk
authors.forename: Romhild
authors.initials: R
authors.lastname: Hoogeveen
authors.forename: Marcus
authors.initials: M
authors.lastname: von Falkenhausen
authors.forename: Ewald
authors.initials: E
authors.lastname: Keller
authors.forename: Horst
authors.initials: H
authors.lastname: Urbach
authors.forename: Christiane K
authors.initials: CK
authors.lastname: Kuhl
authors.forename: Hans H
authors.initials: HH
authors.lastname: Schild
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001013:Aorta, Thoracic / Q000473:pathology*; D001921:Brain / Q000098:blood supply*; D002545:Brain Ischemia / Q000175:diagnosis*; D002343:Carotid Artery, Internal / Q000473:pathology; D016893:Carotid Stenosis / Q000175:diagnosis; D002536:Cerebral Arteries / Q000473:pathology; D002550:Cerebral Veins / Q000473:pathology; D002941:Circle of Willis / Q000473:pathology; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012680:Sensitivity and Specificity
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA