Abstract
In this paper, we propose a method to solve the magnetocardiographic inverse problem based on a ventricular excitation model. This method fits a measured magnetocardiogram (MCG) and a simulated MCG during the whole QRS complex. The simulated MCG is derived from a computer model of the propagated excitation on the ventricle. Parameters estimated by the method are the distribution of purkinje fiber. It is also possible to indirectly estimate the excitation fronts during the ventricular depolarization process. We produced a computer simulation to evaluate the noise stability of the method. It was indicated that this method was stable to noise. Next, we estimated the distribution of purkinje fiber and the excitation fronts from the measured MCG. Estimated excitation fronts are presented in this paper, and correspond to excitation of the isolated human .heart measured by Durrer et al. The result estimated by this method has the great influence on predetermined conduction velocity and effect of return current.
