Magnetic Catheter Navigation in 1.5 Tesla Environment
Principal Investigator: Mark Wilson
Abstract: [unreadable] DESCRIPTION (provided by applicant): [unreadable] The overall goal of this project is to develop new technology: a working prototype catheter whose tip is remotely magnetically deflectable for use in the endovascular interventional MR environment. Several other goals are subsidiary to this, including: the development of catheter materials which are safe and compatible with the MR environment, the development of a plasma vapor deposition and laser photolithography technique which will allow reproducible synthesis of catheters tipped with copper coils in three orthogonal axes, the development of passive or active methods for visualizing the catheter tip, three dimensional navigation of the prototype catheter in vitro in vascular phantoms within a clinical MR scanner, and measurement of heating within the catheter and surrounding simulated vasculature. If successful, the prototype created in this project would be reproducible and behave predictably under a given set of conditions. [unreadable] [unreadable]
Funding Period: 2004-05-01 - 2007-04-30
more information: NIH RePORT
- Magnetic catheter manipulation in the interventional MR imaging environmentMark W Wilson
Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94107, USA
J Vasc Interv Radiol 24:885-91. 2013..To evaluate deflection capability of a prototype endovascular catheter, which is remotely magnetically steerable, for use in the interventional magnetic resonance (MR) imaging environment...
- Endovascular catheter for magnetic navigation under MR imaging guidance: evaluation of safety in vivo at 1.5TS W Hetts
Departments of Radiology and Biomedical Imaging
AJNR Am J Neuroradiol 34:2083-91. 2013..A side product of catheter tip electrical currents, however, is the heat that might damage blood vessels. We sought to determine the upper boundary of electrical currents safely usable at 1.5T in a coil-tipped microcatheter system...
- System architecture for a magnetically guided endovascular microcatheterRyan S Sincic
Department of Radiology and Biomedical Imaging, University of California, San Francisco, 1001 Potrero Avenue, Room 1X57, San Francisco, CA, 94110, USA
Biomed Microdevices 16:97-106. 2014..The center of the artifact created by the energized microcatheter solenoid was a reliable marker for determining the degree of microcatheter deflection and auto-locating the in vivo microcatheter tip...
- Steerable catheter microcoils for interventional MRI reducing resistive heatingAnthony Bernhardt
Lawrence Livermore National Laboratory, Livermore, CA, USA
Acad Radiol 18:270-6. 2011....
- RF Heating of MRI-Assisted Catheter Steering Coils for Interventional MRIFabio Settecase
Department of Radiology and Biomedical Imaging, University of California, San Francisco, 505 Parnassus Avenue, L 352, San Francisco, CA 94143 0628, USA
Acad Radiol 18:277-85. 2011..The aim of this study was too assess magnetic resonance imaging (MRI) radiofrequency (RF)-related heating of conductive wire coils used in magnetically steerable endovascular catheters...