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Comparison of Two Formulations for Computing Body Surface Potential Maps

hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorLAGRACIE, Emma
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorWEYNANS, Lisl
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorCOUDIÈRE, Yves
dc.date.accessioned2024-04-04T02:31:00Z
dc.date.available2024-04-04T02:31:00Z
dc.date.issued2023-12-26
dc.date.conference2023-10-01
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/190280
dc.description.abstractEnIn order to establish a link between the activation map and the body surface signals, we want to compute body potentials from activation maps and a frontlike approximation of the activation of the heart. To do so, two formulations that map the extracardiac potential from the transmembrane voltage naturally emerge from the bidomain model. Either the extracellular/extracardiac potential solves a Laplace equation with discontinuous conductivity coefficient and ionic current as a source (Source Formulation F1); or the quasi-stationary electrical balance between the intra- and extracellular fields (Balance Formulation F2). In this work, we compare F1 and F2, to determine which formulation is the most relevant to use. We compute reference activation map $\psi$ , transmembrane voltage $v$ and body surface map $u$ with a bidomain 2D code. We design two alternative shapes $\tilde{v}$ for a frontlike approximation of $v$ . Afterwards, two extracellular / extracardiac potentials are computed from the activation time $\psi$ and $\tilde{v}$ , using the two different formulations. Then the extracardiac potentials solutions of F1 and F2 are compared respectively to the solution of the bidomain $u$ . Results show that the Balance Formulation F2 is robust to the input data ($\tilde{v}$ and $\psi$). On the contrary, the Source Formulation F1 is very unstable and generates very large errors on the body surface map.
dc.description.sponsorshipL'Institut de Rythmologie et modélisation Cardiaque - ANR-10-IAHU-0004
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enComparison of Two Formulations for Computing Body Surface Potential Maps
dc.typeCommunication dans un congrès
dc.identifier.doi10.22489/CinC.2023.106
dc.subject.halMathématiques [math]/Equations aux dérivées partielles [math.AP]
dc.subject.halInformatique [cs]/Modélisation et simulation
dc.subject.halSciences du Vivant [q-bio]/Ingénierie biomédicale
dc.identifier.arxiv2401.13309
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleCinC 2023 - 50th Computing in Cardiology Conference
bordeaux.countryUS
bordeaux.conference.cityAtlanta
bordeaux.peerReviewedoui
hal.identifierhal-04405814
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2023-10-04
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04405814v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2023-12-26&rft.au=LAGRACIE,%20Emma&WEYNANS,%20Lisl&COUDI%C3%88RE,%20Yves&rft.genre=unknown


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