Performance assessment of electrode configurations for the estimation of omnipolar electrograms from high density arrays

The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront. A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach,...

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Vydáno v:	Computers in biology and medicine Ročník 154; s. 106604
Hlavní autoři:	Castells, Francisco, Ruipérez-Campillo, Samuel, Segarra, Izan, Cervigón, Raquel, Casado-Arroyo, Rubén, Merino, José Luis, Millet, José
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States Elsevier Ltd 01.03.2023 Elsevier Limited
Témata:	Ablation Biomedical engineering Configurations Electrocardiography - methods Electrodes Electrophysiology Heart Heart - physiology High density electrode arrays Internal Medicine Omnipolar electrograms Other Performance assessment Propagation Robust electrogram estimation Signal processing Straight lines Substrates Time Factors Wave fronts Wave propagation Waveforms Signal processing Electrophysiology Omnipolar electrograms High density electrode arrays Robust electrogram estimation Biomedical engineering
ISSN:	0010-4825, 1879-0534, 1879-0534
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Abstract	The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront. A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered. The proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate. A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved. Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure. •A robust method to estimate Omnipolar Electrograms is proposed for HD catheters.•A novel methodology based on a cross-oriented clique is proposed for the first time.•The direction of propagation is better estimated.•Local activation times are detected with higher accuracy.•Results may have a big impact on the design of novel catheters.
AbstractList	AbstractObjective:The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront. Methods:A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered. Results:The proposed approach successfully provided narrower loops essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude and estimations of the local activation times were more accurate. Conclusions:A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved. Relevance:Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure. The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront. A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered. The proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate. A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved. Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure. •A robust method to estimate Omnipolar Electrograms is proposed for HD catheters.•A novel methodology based on a cross-oriented clique is proposed for the first time.•The direction of propagation is better estimated.•Local activation times are detected with higher accuracy.•Results may have a big impact on the design of novel catheters. The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront.OBJECTIVEThe aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront.A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered.METHODSA novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered.The proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate.RESULTSThe proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate.A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved.CONCLUSIONSA novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved.Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure.RELEVANCERobust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure. The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront. A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered. The proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate. A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved. Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure. Objective:The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront.Methods:A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered.Results:The proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate.Conclusions:A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved.Relevance:Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure.
ArticleNumber	106604
Author	Millet, José Castells, Francisco Segarra, Izan Cervigón, Raquel Ruipérez-Campillo, Samuel Casado-Arroyo, Rubén Merino, José Luis
Author_xml	– sequence: 1 givenname: Francisco orcidid: 0000-0001-5044-3545 surname: Castells fullname: Castells, Francisco organization: ITACA Institute, Universitat Politècnica de València, Valencia, Spain – sequence: 2 givenname: Samuel orcidid: 0000-0002-5425-4175 surname: Ruipérez-Campillo fullname: Ruipérez-Campillo, Samuel email: sruiperez@berkeley.edu organization: ITACA Institute, Universitat Politècnica de València, Valencia, Spain – sequence: 3 givenname: Izan orcidid: 0000-0001-9693-6863 surname: Segarra fullname: Segarra, Izan organization: ITACA Institute, Universitat Politècnica de València, Valencia, Spain – sequence: 4 givenname: Raquel surname: Cervigón fullname: Cervigón, Raquel organization: Universidad de Castilla-La Mancha, Cuenca, Spain – sequence: 5 givenname: Rubén surname: Casado-Arroyo fullname: Casado-Arroyo, Rubén organization: Cardiac Electrophysiology Lab, Hôpital Erasme, Brussels, Belgium – sequence: 6 givenname: José Luis surname: Merino fullname: Merino, José Luis organization: Arrhythmia and Robotic Electrophysiology Unit, Hospital Universitario La Paz, Madrid, Spain – sequence: 7 givenname: José surname: Millet fullname: Millet, José organization: ITACA Institute, Universitat Politècnica de València, Valencia, Spain
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CitedBy_id	crossref_primary_10_1007_s11936_024_01034_6 crossref_primary_10_1007_s13239_023_00696_w crossref_primary_10_1016_j_hrthm_2024_10_066 crossref_primary_10_1007_s13246_023_01287_8
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Keywords	Signal processing Electrophysiology Omnipolar electrograms High density electrode arrays Robust electrogram estimation Biomedical engineering
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Snippet	The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the... AbstractObjective:The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the... Objective:The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the...
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SubjectTerms	Ablation Biomedical engineering Configurations Electrocardiography - methods Electrodes Electrophysiology Heart Heart - physiology High density electrode arrays Internal Medicine Omnipolar electrograms Other Performance assessment Propagation Robust electrogram estimation Signal processing Straight lines Substrates Time Factors Wave fronts Wave propagation Waveforms
Title	Performance assessment of electrode configurations for the estimation of omnipolar electrograms from high density arrays
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