The magnetocardiogram as derived from electrocardiographic data.

摘要: Magnetocardiographic signals, as present outside the thorax and generated by depolarization process within ventricles of human heart, have been computed using a model that incorporates uniform double layer exclusive primary source. The volume conductor effects are treated an inhomogeneous, multicompartmental thorax, based on "tailored" geometry derived from magnetic resonance imaging. required activation function, specifying timing ventricular process, was inverse procedure uses input data electric signals measured at body surface. Next, same subjects were measured. A close correspondence between observed (relative root mean square residual difference 0.37). These results demonstrate magnetocardiograms electrocardiograms common basis it is unlikely prominent sources exist electrically silent yet active in genesis fields associated with heart. Moreover, fresh support implied for usefulness classical electrical source during depolarization. contributions secondary previously found to be major component signals; they now also shown signals.