Marker tracking and accuracy verification for interventional magnetic resonance by measuring magnetic field inhomogeneity and determining a noise figure of merit
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United States of America Patent
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Apr 16, 2013
Grant Date -
Sep 18, 2008
app pub date -
Sep 15, 2006
filing date -
Oct 17, 2005
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Expired
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Abstract
A fiducial marker assembly (30) is tracked using a magnetic resonance scanner (10). At the tracked position of the fiducial marker assembly, local B0 magnetic field inhomogeneity is measured. A warning is issued if the measured local B0 magnetic field inhomogeneity satisfies a warning criterion. A noise figure of merit of the tracking is also determined, and the warning is also issued if the noise figure of merit satisfies a noise-based warning criterion.
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