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Impact of the endocardium in a parameter optimization to solve the inverse problem of electrocardiography

hal.structure.identifierIHU-LIRYC
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorRAVON, Gwladys
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierIHU-LIRYC
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorCOUDIÈRE, Yves
hal.structure.identifierIHU-LIRYC
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorPOTSE, Mark
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
hal.structure.identifierIHU-LIRYC
hal.structure.identifierUniversité de Bordeaux [UB]
dc.contributor.authorDUBOIS, Rémi
dc.date.accessioned2024-04-04T03:00:50Z
dc.date.available2024-04-04T03:00:50Z
dc.date.issued2019
dc.identifier.issn1664-042X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/192848
dc.description.abstractEnElectrocardiographic imaging aims at reconstructing cardiac electrical events from electrical signals measured on the body surface. The most common approach relies on the inverse solution of the Laplace equation in the torso to reconstruct epicardial potential maps from body surface potential maps. Here we apply a method based on a parameter identification problem to reconstruct both activation and repolarization times. From an ansatz of action potential, based on the Mitchell-Schaeffer ionic model, we compute body surface potential signals. The inverse problem is reduced to the identification of the parameters of the Mitchell-Schaeffer model. We investigate whether solving the inverse problem with the endocardium improves the results or not. We solved the parameter identification problem on two different meshes: one with only the epicardium, and one with both the epicardium and the endocardium. We compared the results on both the heart (activation and repolarization times) and the torso. The comparison was done on validation data of sinus rhythm and ventricular pacing. We found similar results with both meshes in 6 cases out of 7: the presence of the endocardium slightly improved the activation times. This was the most visible on a sinus beat, leading to the conclusion that inclusion of the endocardium would be useful in situations where endo-epicardial gradients in activation or repolarization times play an important role.
dc.description.sponsorshipL'Institut de Rythmologie et modélisation Cardiaque - ANR-10-IAHU-0004
dc.language.isoen
dc.publisherFrontiers
dc.subject.enParameter optimization
dc.subject.enEndocardium
dc.subject.enECGI
dc.subject.enGradient descent method
dc.subject.enMitchell-Schaeffer
dc.subject.enEndoepicardial gradients
dc.title.enImpact of the endocardium in a parameter optimization to solve the inverse problem of electrocardiography
dc.typeArticle de revue
dc.identifier.doi10.3389/fphys.2018.01946
dc.subject.halMathématiques [math]/Optimisation et contrôle [math.OC]
dc.subject.halSciences du Vivant [q-bio]/Ingénierie biomédicale/Imagerie
bordeaux.journalFrontiers in Physiology
bordeaux.page1946
bordeaux.volume9
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01966574
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01966574v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Frontiers%20in%20Physiology&rft.date=2019&rft.volume=9&rft.spage=1946&rft.epage=1946&rft.eissn=1664-042X&rft.issn=1664-042X&rft.au=RAVON,%20Gwladys&COUDI%C3%88RE,%20Yves&POTSE,%20Mark&DUBOIS,%20R%C3%A9mi&rft.genre=article


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