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Development of an MR‐safe tracking catheter with a laser‐driven tip coil
Author(s) -
Konings Maurits K.,
Bartels Lambertus W.,
van Swol Christiaan F.P.,
Bakker Chris J.G.
Publication year - 2001
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/1522-2586(200101)13:1<131::aid-jmri1020>3.0.co;2-q
Subject(s) - catheter , electromagnetic coil , dephasing , laser , materials science , tracking (education) , magnetic resonance imaging , nuclear magnetic resonance , optics , biomedical engineering , physics , radiology , medicine , psychology , pedagogy , quantum mechanics
We developed a magnetic resonance (MR)‐safe tracking catheter using an optical fiber with a light‐diffusing tip segment to transport laser energy through the catheter. This energy is converted to a DC current running through a small coil at the catheter tip. Our method is inherently MR‐safe since the use of long conducting wires is avoided. The intravoxel dephasing induced by the tip coil was clearly visible for laser powers between 250 mW and 750 mW for all angular positions of the catheter. J. Magn. Reson. Imaging 2001;13:131–135. © 2001 Wiley‐Liss, Inc.