Visualization of vascular guidewires using MR tracking.
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.
Ladd
M E
ME
Department of Radiology, University Hospital Zürich, Switzerland. ladd@dmr.usz.ch
Zimmermann
G G
GG
McKinnon
G C
GC
von Schulthess
G K
GK
Dumoulin
C L
CL
Darrow
R D
RD
Hofmann
E
E
Debatin
J F
JF
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