Method and apparatus for refinably accurate localization of devices and instruments in scattering environments
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United States of America Patent
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Nov 29, 2005
Grant Date -
Sep 11, 2003
app pub date -
Mar 7, 2002
filing date -
Mar 7, 2002
priority date (Note) -
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Abstract
A method of localizing a device, medical or otherwise, within a three dimensional environment, the method comprising: (a) transmitting time varying magnetic fields from at least three transmitters, (b) receiving the transmitted electromagnetic radiation as induced voltage signals from at least one receiver mounted on or within said device, and (c) a processing scheme for processing said received voltage signals in order to extract position and orientation localization information for said device, said processing scheme including correction for conducting materials in the vicinity by the use of information gathered from at least three distinct transmission frequencies for each of said transmitters.
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