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A Patchwork Inverse Method in Combination with the Activation Time Gradient to Detect Regions of Slow Conduction in Sinus Rhythm

hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorBOUHAMAMA, Oumayma
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorPOTSE, Mark
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorDUBOIS, Rémi
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierModélisation et calculs pour l'électrophysiologie cardiaque [CARMEN]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorWEYNANS, Lisl
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierInstitut de rythmologie et modélisation cardiaque [Pessac] [IHU Liryc]
dc.contributor.authorBEAR, Laura
dc.date.accessioned2024-04-04T02:49:21Z
dc.date.available2024-04-04T02:49:21Z
dc.date.issued2020-09-16
dc.date.conference2020-09-13
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/191817
dc.description.abstractEnBackground: Noninvasive electrocardiographic imaging (ECGI) provides real-time panoramic images of epicardial electrical activity from potential measurements on the torso surface. Several numerical methods are commonly used for ECGI, including the finite-element method (FEM), the boundary-element method (BEM) and the method of fundamental solutions (MFS). However, doubts remain about the ability of these methods to detect the presence of regions of slow conduction in structurally abnormal hearts.Objective: The purpose of this study was to develop a method toassess the ability of ECGI to find regions of slow conduction in sinus rhythm.Method: Slow conduction was inferred from large activation time gradients. To determine these gradients we computed the activation time difference between each node and all other nodes within 10 mm, and tested five different methods (maximum, minimum, average, nearest neighbour and random) to define a unique difference value at each node. To estimate the activation times themselves, we tested the current ECGI methods (FEM, MFS) and a novel numerical method called the Patchwork Method (PM), which locally chooses the optimal ECGI method.Results: Two methods of computing activation time gradients (maximum and average) accurately located 6 of the 7 zones of tissue damage. Furthermore, the PM method succeeded in locating 5 of the 6 slow conduction zones recorded whereas classical ECGI methods did not locate any damaged zone.Conclusion: In this study, the novel ECGI approach presented is an efficient tool to help overcome some of the limitations of classical numerical methods in sinus rhythm in structurally abnormal hearts, showing its ability in detecting regions of slow conduction by using the average or maximum activation time gradient.
dc.language.isoen
dc.title.enA Patchwork Inverse Method in Combination with the Activation Time Gradient to Detect Regions of Slow Conduction in Sinus Rhythm
dc.typeCommunication dans un congrès
dc.subject.halMathématiques [math]/Equations aux dérivées partielles [math.AP]
dc.subject.halSciences du Vivant [q-bio]/Médecine humaine et pathologie/Cardiologie et système cardiovasculaire
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleCinC 2020 - Computing in Cardiology
bordeaux.countryIT
bordeaux.conference.cityRimini / Virtual
bordeaux.peerReviewedoui
hal.identifierhal-02954702
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2020-09-16
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02954702v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2020-09-16&rft.au=BOUHAMAMA,%20Oumayma&POTSE,%20Mark&DUBOIS,%20R%C3%A9mi&WEYNANS,%20Lisl&BEAR,%20Laura&rft.genre=unknown


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