Patent ID: 8406848
Filing Date: 2013-03-26
Classification: A61B,G06T

Abstract:
1. A computer program product comprising at least one non-transitory computer-readable medium storing one or more sequences of instructions, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to execute a computer-implemented method for reconstructing electrical current distribution of a portion of a body, the method comprising: [a] representing the portion of the body as a set of electrical current dipoles with a fixed positional relationship to each other within a bounding region, each electrical current dipole having a defined fixed positional relationship to a current dipole origin point within the bounding region; [b] representing a magnetic field in a sensor array as a set of nonlinear equations of the magnitude and orientation of the set of electrical current dipoles, said sensor array having a defined array origin point within a bounding region of said sensor array, and said magnetic field being further represented by an offset from he defined array origin point to the current dipole origin point within the bounding region; [c] setting a value for the offset; [d] representing the magnetic field in the sensor array as a set of linear equations of the magnitude and orientation of the set of electrical current dipoles and the value for the offset; [e] solving the set of linear equations to obtain the magnitude and orientation of the set of electrical current dipoles; [f] inputting into the set of nonlinear equations the magnitude and orientation of the set of electrical current dipoles obtained from solving the set of linear equations and solving the set of nonlinear equations to obtain an updated offset; and [g] IF a stop condition is not met, THEN using the updated offset as the value for the offset and returning to step [d];