Spatial Filtering Methods for Local Activation Determination in Fractionated Electrograms from Simulated Infarcted Hearts

I. Chouvarda; N. Maglaveras; J. de Bakker; F. J. L. van Capelle; C. Pappas

doi:10.1055/s-0038-1634273

Methods of Information in Medicine, Table of Contents

Methods Inf Med 2000; 39(02): 164-167
DOI: 10.1055/s-0038-1634273

Original Article

Schattauer GmbH

Spatial Filtering Methods for Local Activation Determination in Fractionated Electrograms from Simulated Infarcted Hearts

Authors

I. Chouvarda

¹Aristotelian University, Lab of Medical Informatics, The Medical School, Thessaloniki, Macedonia, Greece
N. Maglaveras

¹Aristotelian University, Lab of Medical Informatics, The Medical School, Thessaloniki, Macedonia, Greece
J. de Bakker

²University of Amsterdam, Lab of Experimental Cardiology, Amsterdam, The Netherlands
F. J. L. van Capelle

²University of Amsterdam, Lab of Experimental Cardiology, Amsterdam, The Netherlands
C. Pappas

¹Aristotelian University, Lab of Medical Informatics, The Medical School, Thessaloniki, Macedonia, Greece

Abstract

Abstract:

The purpose of this work is the enhancement of local activation in multiphasic extracellular recordings coming from infarcted myocardial tissue and, consequently, the distinction of local from distal activation. Deconvolution procedures are applied, in the form of spatial filtering, in order to estimate transmembrane currents from the extracellular recordings. Simulated data are used in order to test the methods. The current source estimates are compared to the actual transmembrane currents and to Laplacian estimates.

Keywords:

Local Activation - Electrogram - Deconvolution

Full Text

References

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