Studying on Conductivity of Cardiac Tissues in Magnetocardiography

Two approaches, indirectly estimate and directly calculate the conductivity of cardiac tissues, were studied by using real magnetocardiography (MCG) data. The first approach is to estimate the magnetic induction produced by the volume current firstly, then, to calculate the conductivity. The second approach is to directly calculate the conductivity. Our results verified that the effective cardiac conductivity could be reasonably close to that was measured by other methods. The cardiac conductivity of normal and abnormal subjects from an experimental point of view was also discussed.