title: [Real-time MRI with radial k-radial scanning technique for control of angiographic interventions].
abstract: OBJECTIVE
  To test the feasibility of real-time MR controlled guidance of field-inhomogeneity catheters in vitro and in vivo as a first step to MR-guided angiographic interventions.
  
  
  METHODS
  Applying a combination of radial scanning with the sliding window reconstruction technique, a frame rate of 23 low resolution images per second was achieved. Field inhomogeneity catheters were steered through a flow phantom and into the renal arteries of a pig.
  
  
  RESULTS
  It was possible to visualize flow or, respectively, vessels and to depict catheter movements. This enabled real-time MR-guidance of the catheter into the renal arteries of the flow phantom and into those of the pig.
  
  
  CONCLUSIONS
  The new technique yields a sufficiently high temporal resolution for MR-guidance of catheters through vessels.
authors.affiliation: University of Minnesota, Minneapolis, USA. buecker@rad.rwth-aachen.de
authors.forename: A
authors.initials: A
authors.lastname: Bücker
authors.forename: G
authors.initials: G
authors.lastname: Adam
authors.forename: J M
authors.initials: JM
authors.lastname: Neuerburg
authors.forename: A
authors.initials: A
authors.lastname: Glowinski
authors.forename: C C
authors.initials: CC
authors.lastname: Nolte-Ernsting
authors.forename: D
authors.initials: D
authors.lastname: Hunter
authors.forename: S
authors.initials: S
authors.lastname: Grosskortenhaus
authors.forename: M
authors.initials: M
authors.lastname: Leenen
authors.forename: V
authors.initials: V
authors.lastname: Rasche
authors.forename: R
authors.initials: R
authors.lastname: Proksa
authors.forename: J J
authors.initials: JJ
authors.lastname: van Vaals
authors.forename: W
authors.initials: W
authors.lastname: Hurtak
authors.forename: R W
authors.initials: RW
authors.lastname: Günther
mesh_terms: D000792:Angiography; D000818:Animals; D001012:Aorta, Abdominal / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D005240:Feasibility Studies; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods*; D019047:Phantoms, Imaging; D012077:Renal Artery / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D013552:Swine
vernacular_title: Echtzeit-MR mit radialer k-Raumabtastung zur Uberwachung angiographischer Interventionen.