Nonsmooth Regularization in Electrocardiographic Imaging
نویسندگان
چکیده
Electrocardiographic imaging is an inverse problem which consists of computing epicardial potential distributions from measurements of body surface potentials. Smoothing and attenuation of the electric field by the intervening body volume conductor render the problem ill posed, requiring regularization to stabilize the inverse solution. This paper reports a study on the efficacy of nonsmooth regularization in recovering steep potential gradients related to epicardial activation wave fronts by comparing total variation and Tikhonov solutions. Our preliminary results suggest that the inversion method applied to the electrocardiographic imaging problem should include the constraint on the total variation of the epicardial potential distribution.
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