Abstract :
In a recent paper, spatial regularization (SR) was proposed as an alternative to zero order Tikhonov regularization (ZOT) for estimating endocardial potentials from a non-contact endocardial probe. Here, the authors compare SR, ZOT and first order Tikhonov regularization (FOT) on a related inverse problem, that of estimating epicardial potentials from measured body surface potentials. For this test case, SR produced smaller average relative errors than ZOT but the errors were not as small as those of FOT
Keywords :
electrocardiography; inverse problems; measurement errors; medical signal processing; physiological models; ECG analysis; average relative errors; electrocardiography inverse problem; epicardial potentials estimation; first order Tikhonov regularization; measured body surface potentials; noncontact endocardial probe; spatial regularization; zero order Tikhonov regularization; Computer errors; Electrocardiography; Electrodes; Filters; Geometry; Heart; Inverse problems; Matrix decomposition; Probes; Strontium;
