A method for the ECG inverse problem in the frequency domain

Cesar Navarro-Paredes, C Turner, OJ Escalona, C Owens, JMCC Anderson, J Adgey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Inverse ECG problem is ill-conditioned and its solution requires a relatively high computing effort. Additional constraints are required in order to obtain a stable solution. A method is proposed in which the solution of the inverse ECG problem is approached in the frequency domain, taking advantage of the assumption that propagation delays may be ignored and the quasi-periodicity of ECG. In this method usual Tikhonov zero-order constraints are applied to the amplitudes of the signals for a selected frequency domain. This method ensures faster solutions that are spatially and temporally well behaved. Calculation of epicardial electrograms is compared to a basic method.
Original languageEnglish
Title of host publicationUnknown Host Publication
Pages309-314
Number of pages6
DOIs
Publication statusPublished - 15 Jul 2005
Event18th IEEE Symposium on Computer-Based Medical Systems; Dublin - Dublin, Ireland
Duration: 15 Jul 2005 → …

Conference

Conference18th IEEE Symposium on Computer-Based Medical Systems; Dublin
Period15/07/05 → …

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Keywords

  • electrocardiography
  • inverse problems
  • medical signal processing
  • Tikhonov zero-order
  • constraint
  • epicardial electrogram
  • frequency domain
  • inverse ECG problem
  • Frequency domain analysis.

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