Epicardial current source distribution with an ellipsoid model

In the study of the inverse problem in magnetocardiography, distributed source models provide a general description of the current sources in the heart during activation and repolarization. To give a quick survey of the dynamics of the estimated current flow during the heart's cycle, an ellipsoidal model, which can be considered as an approximation of the heart's shape in case the individualized source space models (MRI or CT) are not available for a patient, was used. The axis of the ellipsoid has been oriented according to clinical findings. This rough definition of the source space has the advantage of a smooth surface and as a reasonable approximation of the real heart's shape.