ABSTRACT
Magnetocardiography (MCG) realises the registration and analysis of the magnetic component of the field, and the ECG- the electric component. Therefore, the same biophysical model is used in order to explain the nature and characteristics of an MCG signal, as well as the ECG signal. Variation of the magnetic field corresponding to cardiocycles is called an MCG-curve. The MCG-curve has a similar shape and is described by the same set of names of the peaks, segments and intervals as an electrocardiogram. In cardiac electrophysiology it was found that almost any reason of pathology is related to the mechanism of ion current density variation across the cell membrane. On the basis of biophysical models adopted in cardiology it is known that the propagation of the wave front of myocardium excitation circulates from epicardium to endocardium and of myocardium depolarisation in the opposite direction, provided in the normal case by the prevalence rate of radial action currents on the tangential.
