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Heart Surface Electrocardiographic Inverse Solutions

  • Fred Greensite
Part of the Bioelectric Engineering book series (BEEG)

Abstract

In this chapter, we will review the problem of noninvasive and minimially invasive imaging of cardiac electrical function. We use the term “imaging” in the sense of methodology which seeks to spatially resolve distributed properties of cardiac muscle electrophysiology such as extracellular potential, or features of the action potential. Thus, we do not consider the problems of computing properties of an “equivalent” cardiac multipole, moving dipole(s), or any other source model that does not satisfy such criteria. We will further restrict ourselves to resolving such electrophysiological features on the epicardial or endocardial surfaces— a reasonable restriction, since measurements currently accessed by invasive procedures are obtained on these surfaces, and also because the spatial dimension of the “source” domain then nominally matches the spatial dimension of the data domain. Thus, we will not consider the earliest distributed source model, representing intramural current density imaging (Barber and Fischman, 1961; Bellman et al., 1964), on which work continues (e.g., see (He and Wu, 2001), or the recent heart-excitation-model based 3D inverse imaging approach (Li and He, 2001) in Chapter 5 in this book).

Keywords

Inverse Problem Singular Value Decomposition Regularization Parameter Tikhonov Regularization Solution Estimate 
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Copyright information

© Kluwer Academic/Plenum Publishers, New York 2004

Authors and Affiliations

  • Fred Greensite
    • 1
  1. 1.Department of Radiological SciencesUniversity of California-Irvine Medical CenterOrangeUSA

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