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Tuned fiducial markers to identify body locations with minimal perturbation of tissue magnetization
Author(s) -
Burl Michael,
Coutts Glyn A.,
Young Ian R.
Publication year - 1996
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910360326
Subject(s) - fiducial marker , magnetization , nuclear magnetic resonance , physics , electromagnetic coil , perturbation (astronomy) , materials science , biomedical engineering , nuclear medicine , computer science , medicine , magnetic field , artificial intelligence , quantum mechanics
A fiducial marker is described in which a small cell containing a short T 1 solution is surrounded by single‐ or quadrature‐tuned windings. It is shown how these can be used to enhance small externally applied RF pulses, which do not significantly perturb the magnetization of the tissue, to excite the fiducial sample, and get substantial signals from it. The fiducials can be used to mark locations on the body unambiguously for, for example, frameless stereotaxy, and to identify coils, catheters, or other inserted devices.