Differences in applied electrical power between full thorax models and limited-domain models for RF cardiac ablation
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- dc.contributor.author Irastorza, Ramiro M.
- dc.contributor.author González-Suárez, Ana
- dc.contributor.author Pérez, Juan J.
- dc.contributor.author Berjano, Enrique J.
- dc.date.accessioned 2020-07-08T08:35:17Z
- dc.date.available 2020-07-08T08:35:17Z
- dc.date.issued 2020
- dc.description.abstract Purpose: Most modeling studies on radiofrequency cardiac ablation (RFCA) are based on limited-domain models, which means the computational domain is restricted to a few centimeters of myocardium and blood around the active electrode. When mimicking constant power RFCA procedures (e.g., atrial fibrillation ablation) it is important to know how much power is absorbed around the active electrode and how much in the rest of the tissues before reaching the dispersive electrode. Methods: 3D thorax full models were built by progressively incorporating different organs and tissues with simplified geometries (cardiac chamber, cardiac wall, subcutaneous tissue and skin, spine, lungs and aorta). Other 2D limited-domain models were also built based on fragments of myocardium and blood. The electrical problem was solved for each model to estimate the spatial power distribution around the active electrode. Results: From 79 to 82% of the power was absorbed in a 4 cm-radius sphere around the active electrode in the full thorax model at active electrode insertion depths of between 0.5 and 2.5 mm, while the impedance values ranged from 104 to 118 Ω, which were consistent with those found (from 83 to 103 Ω) in a 4 cm radius cylindrical limited domain model. Conclusion: The applied power in limited-domain RFCA models is approximately 80% of that applied in full thorax models, which is equivalent to the power programed in a clinical setting.en
- dc.description.sponsorship This work was supported by the Spanish Ministerio de Economía, Industria y Competitividad under ‘Plan Estatal de Investigación, Desarrollo e Innovación Orientada a los Retos de la Sociedad’, Grant No [RTI2018-094357-B-C21], by the Universidad Nacional Arturo Jauretche – Argentina ‘UNAJ Investiga’ [80020170100019UJ], and by ‘Agencia Nacional de Promoción Científica y Tecnológica de Argentina’ [PICT-2016-2303].
- dc.format.mimetype application/pdf
- dc.identifier.citation Irastorza RM, Gonzalez-Suarez A, Pérez JJ, Berjano E. Differences in applied electrical power between full thorax models and limited-domain models for RF cardiac ablation. Int J Hyperthermia. 2020 Jun 18;37(1):677-87. DOI: 10.1080/02656736.2020.1777330
- dc.identifier.doi http://dx.doi.org/10.1080/02656736.2020.1777330
- dc.identifier.issn 0265-6736
- dc.identifier.uri http://hdl.handle.net/10230/45089
- dc.language.iso eng
- dc.publisher Taylor & Francis
- dc.relation.ispartof International Journal of Hyperthermia. 2020 Jun 18;37(1):677-87
- dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/RTI2018-094357-B-C21
- dc.rights 2020 The Author(s). Published with license by Taylor & Francis Group, LLC This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- dc.rights.uri http://creativecommons.org/licenses/by/4.0/
- dc.subject.keyword Cardiac ablationen
- dc.subject.keyword Computer modelen
- dc.subject.keyword Limited-domain modelen
- dc.subject.keyword RF ablationen
- dc.subject.keyword Thorax modelen
- dc.title Differences in applied electrical power between full thorax models and limited-domain models for RF cardiac ablationen
- dc.type info:eu-repo/semantics/article
- dc.type.version info:eu-repo/semantics/publishedVersion