Magnetic resonance scanner with electromagnetic position and orientation tracking device
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United States of America Patent
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Apr 12, 2005
Grant Date -
Oct 2, 2003
app pub date -
Mar 17, 2003
filing date -
Dec 23, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for combining electromagnetic position and orientation tracking with magnetic resonance scanner is provided. One embodiment includes a magnetic resonance scanner defining a reference coordinate system for scanning a target. Coupled to the magnetic resonance scanner is a magnetic field source which produces a magnetic field. The magnetic field is sensed by a magnetic field sensor which produces a signal proportional to the magnetic field. The magnetic field sensor has a location relative to the reference coordinate system. The location of the magnetic field sensor relative to the reference coordinate system of the magnetic resonance scanner is determined by a location tracking device using at least a line segment model of the magnetic field source and the signal from the magnetic field sensor.
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