Localization of Three-Dimensional Sources in Cardiac Tissue Using Optical Mapping

Abstract : Optical mapping allows the visualization of cardiac ac-tion potentials on cardiac tissue surfaces by fluorescence using voltage-sensitive dyes. So far, the surface measure-ments are directly related to surface action potentials. We aim at exploiting these measurements in order to recon-struct three-dimensional action potentials. In this prelimi-nary work, we tried to localize fixed electrical sources in a three-dimensional slab of tissue. Therefore, we minimized the difference between the measure and a model, in a least squares sense. The model is based on the diffusion equa-tion for the propagation of light, and simplified spherical or ellipsoidal electrical wavefronts. The inverse problem is solved by combining the gradient method and the BFGS algorithm. The method was challenged on data in silico, and then on experimental data. The results show improve-ments over previous localization methods on data in silico, although its use on experimental data still requires some work.
Type de document :
Communication dans un congrès
CinC 2014 : Computing in Cardiology Conference, Sep 2014, Cambridge, United States. 41, pp.829 - 832, Computing in Cardiology 2014
Liste complète des métadonnées

Littérature citée [5 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-01114916
Contributeur : Gwladys Ravon <>
Soumis le : mardi 10 février 2015 - 14:20:49
Dernière modification le : jeudi 15 mars 2018 - 22:16:08
Document(s) archivé(s) le : jeudi 28 mai 2015 - 08:20:33

Fichier

0829.pdf
Publication financée par une institution

Identifiants

  • HAL Id : hal-01114916, version 1

Collections

Citation

Gwladys Ravon, Yves Coudière, Angelo Iollo, Oliver Bernus, Richard D. Walton. Localization of Three-Dimensional Sources in Cardiac Tissue Using Optical Mapping. CinC 2014 : Computing in Cardiology Conference, Sep 2014, Cambridge, United States. 41, pp.829 - 832, Computing in Cardiology 2014. 〈hal-01114916〉

Partager

Métriques

Consultations de la notice

335

Téléchargements de fichiers

88