Patent ID: 6839588

Claim:
A system for determining electrical potentials on an endocardial surface of a heart, the system comprising: a non-contact catheter probe having a surface and a terminal end portion adapted to be positioned in a cavity of the heart, the terminal end portion being adapted to be conformed into a first elongate shape and at least one second curved shape that includes a spiral shape, wherein the terminal end portion is conformed without expanding the terminal end portion; a plurality of electrodes disposed on the end portion of the probe, the electrodes being adaptable to measure electrical potentials in the cavity; imaging means for capturing geometric data on the probe and the endocardial surface; means for determining a geometric relationship between the probe surface and the endocardial surface based on the geometric data; means for generating a matrix of coefficients representing the geometric relationship between the probe surface and the endocardial surface; and, means for determining endocardial potentials based on catheter probe electrode potentials and the matrix of coefficients.