On the Possibility to Determine Integral Characteristics of the Cardiac Electric Generator from Extracardiac Electric and Magnetic Measurements

The relation between the electric and magnetic fields of the heart outside the body is considered on the assumption that the primary bioelectric generators impressed membrane currents may be represented as geometrically curvilinear thread-like flows. An approach based substantially upon the multipole expansion of scalar potentials is developed for distinguishing between two parts of a measured total magnetic field, the first part being uniquely joint with the electric field, and the second being independent and containing information about curvilinearity of the elementary generators.