Patent Document ID: 20100191131
Application ID: 12623818
Patent Flag: 0

Claim One:
1. A method of noninvasive electrophysiological study of the heart comprising the following stages: an attachment of one-off registration electrodes on the chest surface, an ECG-registration in a great number of unipolar leads from the chest surface: processing of ECG-signals in real-time mode, retrospective processing of ECG obtained, computer (CT) or magneto-resonance (MRT) tomography of the chest of a patient with electrodes attached, a construction and edition of computer voxel models of organs of the chest and heart, a construction of polygonal models of the torso and heart with the help of a computer program; a construction of a finite-element grid of a chest region bounded by its external surface and the heart epicardial surface; a determination of a coefficient of specific electroconductivity for each point of the chest on CT or MRT data on the basis of known conformities between a type of the biological tissue and the Hounsfield number (at CT) or between an intensity of a MR-signal (at MRT) and a type of the biological tissue and its specific electroconductivity; a determination of coordinates of registration electrodes on the chest surface; an interpolation of values of ECG-signals in nodes of a polygonal grid (obtaining isopotential maps on a polygonal model of the torso); a reconstruction of the electric field potential at given points of the chest, heart's epicardial surface, interventricular and interatrial septum surfaces; a visualization of results of reconstructing the heart electric field in the form of epicardial electrograms, isochronous and isopotential maps, as well as propagation maps on polygonal models of the heart and its structures; a clinical evaluation of results.