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Method and apparatus for determining biocurrent distribution within subject

  • US 5,243,984 A
  • Filed: 08/13/1992
  • Issued: 09/14/1993
  • Est. Priority Date: 08/13/1991
  • Status: Expired due to Fees
First Claim
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1. A method for determining biocurrent distribution within a subject, comprising the steps of:

  • measuring potentials at a plurality of points on a surface of said subject;

    deriving physical properties of said subject in positions of a 3-D network of predetermined cells in said subject;

    determining admittances of lines defining external shapes of said cells on the basis of said physical properties;

    calculating potentials of nodes of positions corresponding to at least said measuring points in a 3-D network formed by said lines, on the basis of the admittances of said lines and biocurrent distribution within said subject and wherein at least one current source is connected in parallel with said lines;

    changing position and current magnitude of each of said at least one current source while comparing said calculated potentials with said measured potentials, and determining the positions and current magnitudes of the at least one current source on the basis of said comparing anddetermining said biocurrent distribution from said positions and current magnitudes of the at least one current source.

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