title: Visualization of vascular guidewires using MR tracking.
abstract: MR tracking of a vascular guidewire sized for a .035-inch (.89-mm) catheter lumen was performed. The guidewire was actively tracked by incorporation of a miniature radiofrequency (RF) receive coil built into its tip. After in vitro validation, simultaneous tracking of the guidewire and a catheter was performed in the aortic and abdominal vessels of a swine at 1.5 T. The ability to track such a small device and the ability to simultaneously track multiple devices are significant steps towards vascular interventions under MR guidance.
authors.affiliation: Department of Radiology, University Hospital Zürich, Switzerland. ladd@dmr.usz.ch
authors.forename: M E
authors.initials: ME
authors.lastname: Ladd
authors.forename: G G
authors.initials: GG
authors.lastname: Zimmermann
authors.forename: G C
authors.initials: GC
authors.lastname: McKinnon
authors.forename: G K
authors.initials: GK
authors.lastname: von Schulthess
authors.forename: C L
authors.initials: CL
authors.lastname: Dumoulin
authors.forename: R D
authors.initials: RD
authors.lastname: Darrow
authors.forename: E
authors.initials: E
authors.lastname: Hofmann
authors.forename: J F
authors.initials: JF
authors.lastname: Debatin
mesh_terms: D000818:Animals; D002404:Catheterization / Q000295:instrumentation*; D004867:Equipment Design; D008279:Magnetic Resonance Imaging / Q000379:methods*; D019047:Phantoms, Imaging; D015642:Radiology, Interventional / Q000295:instrumentation; D013552:Swine