Annals of Biomedical Engineering

, Volume 26, Issue 1, pp 37–47

A Field-Compatible Method for Interpolating Biopotentials

  • John E. Burnes
  • David C. Kaelber
  • Bruno Taccardi
  • Robert L. Lux
  • Philip R. Ershler
  • Yoram Rudy
Article

DOI: 10.1114/1.49

Cite this article as:
Burnes, J.E., Kaelber, D.C., Taccardi, B. et al. Annals of Biomedical Engineering (1998) 26: 37. doi:10.1114/1.49

Abstract

Mapping of bioelectric potentials over a given surface (e.g., the torso surface, the scalp) often requires interpolation of potentials into regions of missing data. Existing interpolation methods introduce significant errors when interpolating into large regions of high potential gradients, due mostly to their incompatibility with the properties of the three-dimensional (3D) potential field. In this paper, an interpolation method, inverse-forward (IF) interpolation, was developed to be consistent with Laplace's equation that governs the 3D field in the volume conductor bounded by the mapped surface. This method is evaluated in an experimental heart–torso preparation in the context of electrocardiographic body surface potential mapping. Results demonstrate that IF interpolation is able to recreate major potential features such as a potential minimum and high potential gradients within a large region of missing data. Other commonly used interpolation methods failed to reconstruct major potential features or preserve high potential gradients. An example of IF interpolation with patient data is provided to illustrate its applicability in the actual clinical setting. Application of IF interpolation in the context of noninvasive reconstruction of epicardial potentials (the “inverse problem”) is also examined. © 1998 Biomedical Engineering Society.

PAC98: 8710+e, 0260Ed

Interpolation Mapping Bioelectric potentials Inverse problem Epicardial potentials Body surface potential mapping Field method Interpolating biopotentials Electrocardiogram 

Copyright information

© Biomedical Engineering Society 1998

Authors and Affiliations

  • John E. Burnes
    • 1
  • David C. Kaelber
    • 1
  • Bruno Taccardi
    • 2
  • Robert L. Lux
    • 2
  • Philip R. Ershler
    • 2
  • Yoram Rudy
    • 1
  1. 1.Cardiac Bioelectricity Research and Training Center, Department of Biomedical EngineeringCase Western Reserve UniversityCleveland
  2. 2.Cardiovascular Research and Training InstituteUniversity of UtahSalt Lake City

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