Remote control of catheter tip deflection: An opportunity for interventional MRI

This study seeks to exploit the high magnetic field environment of a clinical MRI scanner and demonstrate the technical feasibility of developing a catheter whose tip can be remotely oriented within the magnetic field by applying a DC current to a coil wound around the catheter tip to generate a mag...

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Bibliographic Details
Published in:Magnetic resonance in medicine 2002-12, Vol.48 (6), p.1091-1095
Main Authors: Roberts, T.P.L., Hassenzahl, W.V., Hetts, S.W., Arenson, R.L.
Format: Article
Language:English
Subjects:
Biological and medical sciences
catheter
Catheterization
deflection
Humans
Image Enhancement
Image Processing, Computer-Assisted
interventional MRI
Investigative techniques, diagnostic techniques (general aspects)
Magnetic Resonance Angiography - methods
Medical sciences
Miscellaneous. Technology
Models, Theoretical
Phantoms, Imaging
Radiodiagnosis. Nmr imagery. Nmr spectrometry
Radiology, Interventional
Sensitivity and Specificity
vascular disease
Vascular Diseases - diagnosis
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Description
Summary:This study seeks to exploit the high magnetic field environment of a clinical MRI scanner and demonstrate the technical feasibility of developing a catheter whose tip can be remotely oriented within the magnetic field by applying a DC current to a coil wound around the catheter tip to generate a magnetic moment and consequent deflection. To achieve arbitrary three‐dimensional deflections, a three‐axis coil was wound on a 1.5 Fr cylindrical catheter. By applying DC currents in the 100 mA range, this catheter was successfully guided through a 3D phantom maze, mimicking the vasculature, under MR imaging guidance. Feasibility was demonstrated that the strong ambient magnetic field of the MR scanner offers a special opportunity to develop simple devices that can be remotely steered to sites of clinical interest. Magn Reson Med 48:1091–1095, 2002. © 2002 Wiley‐Liss, Inc.
ISSN:0740-3194
1522-2594
DOI:10.1002/mrm.10325