Rd. Throne et al., GENERALIZED EIGENSYSTEM TECHNIQUES FOR THE INVERSE PROBLEM OF ELECTROCARDIOGRAPHY APPLIED TO A REALISTIC HEART-TORSO GEOMETRY, IEEE transactions on biomedical engineering, 44(6), 1997, pp. 447-454
We have previously proposed two novel solutions Iso to the inverse pro
blem of electrocardiography, the generalized eigensystem technique (GE
S) and the modified generalized eigensystem technique (tGES), and have
compared these techniques with other numerical techniques using both
homogeneous and inhomogeneous eccentric spheres model problems. In tho
se studies we found our generalized eigensystem approaches generally g
ave superior performance over both truncated singular value decomposit
ion (SVD) and zero-order Tikhonov regularization (TIK). In this paper
we extend the comparison to the case of a realistic heart-torso geomet
ry. With this model, the GES and tGES approaches again provide smaller
relative errors between the true potentials and the numerically deriv
ed potentials than the other methods studied, In addition, the isopote
ntial maps recovered using GES and tGES appear to be more accurate tha
n the maps recovered using either SVD and TIK.