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Optimization of Organ Conductivity for the Forward Problem of Electrocardiography

hal.structure.identifierInstitut National de la Santé et de la Recherche Médicale [INSERM]
hal.structure.identifierIHU-LIRYC
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorBEAR, Laura
hal.structure.identifierIHU-LIRYC
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
hal.structure.identifierInstitut National de la Santé et de la Recherche Médicale [INSERM]
dc.contributor.authorDUBOIS, Rémi
hal.structure.identifierIHU-LIRYC
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
dc.contributor.authorZEMZEMI, Nejib
dc.date.accessioned2024-04-04T03:12:52Z
dc.date.available2024-04-04T03:12:52Z
dc.date.conference2016-09-11
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/193905
dc.description.abstractEnThis study presents an empirical approach to optimize conductivities within a torso model given simultaneous epicardial and body surface potential recordings.The conductivities of the lungs, skeletal muscle and torso cavity were estimated within a forward model by minimizing the relative error betweencomputed and reference torso potentials using a standard gradient-based approach. The sensitivity of this approach was evaluated over different levels of geometric error and signal noise, and the gradient of the cost function was determinedusing both 1) finite differences and 2) an adjoint method. All conductivities were accurately estimated (<10% difference in value) withup to 0.20mV signal noiseand all levels of electrode localization error (up to 2.56 cm) using a finite difference approach. While the adjoint approachwas more computationally efficient, a finite difference approach was more stable across different signals and more robust to noise.
dc.language.isoen
dc.title.enOptimization of Organ Conductivity for the Forward Problem of Electrocardiography
dc.typeCommunication dans un congrès
dc.subject.halMathématiques [math]/Equations aux dérivées partielles [math.AP]
dc.subject.halMathématiques [math]/Analyse numérique [math.NA]
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleComputing In cardiology
bordeaux.countryCA
bordeaux.conference.cityVancouver
bordeaux.peerReviewedoui
hal.identifierhal-01402927
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2016-09-14
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01402927v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.au=BEAR,%20Laura&amp;DUBOIS,%20R%C3%A9mi&amp;ZEMZEMI,%20Nejib&amp;rft.genre=unknown


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