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Method and apparatus for mapping a structure

  • US 8,532,734 B2
  • Filed: 04/09/2009
  • Issued: 09/10/2013
  • Est. Priority Date: 04/18/2008
  • Status: Active Grant
First Claim
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1. A method of correcting for distortion in an electro-potential position sensing system, comprising;

  • injecting a current into a volume between at least two electrodes of a set of axis generation electrodes;

    positioning an instrument into the volume;

    determining a first position of a first electrode on the instrument;

    determining a second position of a second electrode on the instrument;

    determining a vector from the first electrode on the instrument to the second electrode on the instrument based on the determined first position and second position;

    selecting a distance value from the first electrode;

    plotting a corrected map data point as a point at the selected distance from the first position; and

    collecting a plurality of first positions.

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