title: High-resolution magnetic resonance angiography of hands with timed arterial compression (tac-MRA).
abstract: Timed arterial compression (tac) of blood flow can be achieved by inflation of a blood-pressure cuff. We postulated that this technique might improve contrast-enhanced magnetic resonance angiography (MRA) of the arteries of the hands. We studied eight volunteers and six patients with occlusive arterial disease of the hands with standard MRA and tac-MRA. Compared with standard MRA, acquisition time was extended with the blood-pressure cuff by a factor of four, leading to quadrupled image resolution (512x1024). Furthermore, flow-related artifacts were not seen. Tac-MRA permits visualisation of the peripheral arterial system in finer detail than that achieved with standard MRA.
authors.affiliation: MR Research Group, Institute of Radiology, Cantonal Hospital, Winterthur, Switzerland. ku.wentz@ksw.ch
authors.forename: Klaus U
authors.initials: KU
authors.lastname: Wentz
authors.forename: Johannes M
authors.initials: JM
authors.lastname: Fröhlich
authors.forename: Constantin
authors.initials: C
authors.lastname: von Weymarn
authors.forename: Michael A
authors.initials: MA
authors.lastname: Patak
authors.forename: Regula
authors.initials: R
authors.lastname: Jenelten
authors.forename: Christoph L
authors.initials: CL
authors.lastname: Zollikofer
mesh_terms: D000328:Adult; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D016022:Case-Control Studies; D006225:Hand / Q000098:blood supply*; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D013557:Switzerland