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Computational modeling of internally cooled wet (ICW) electrodes for radiofrequency ablation: Impact of rehydration, thermal convection and electrical conductivity

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Computational modeling of internally cooled wet (ICW) electrodes for radiofrequency ablation: Impact of rehydration, thermal convection and electrical conductivity

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dc.contributor.author Trujillo Guillen, Macarena es_ES
dc.contributor.author Bon Corbín, José es_ES
dc.contributor.author Berjano, Enrique es_ES
dc.date.accessioned 2018-03-09T05:18:01Z
dc.date.available 2018-03-09T05:18:01Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0265-6736 es_ES
dc.identifier.uri http://hdl.handle.net/10251/99051
dc.description.abstract [EN] Purpose: (1) To analyse rehydration, thermal convection and increased electrical conductivity as the three phenomena which distinguish the performance of internally cooled electrodes (IC) and internally cooled wet (ICW) electrodes during radiofrequency ablation (RFA), (2) Implement a RFA computer model with an ICW which includes these phenomena and (3) Assess their relative influence on the thermal and electrical tissue response and on the coagulation zone size. Methods: A 12-min RFA in liver was modelled using an ICW electrode (17G, 3cm tip) by an impedance-control pulsing protocol with a constant current of 1.5A. A model of an IC electrode was used to compare the ICW electrode performance and the computational results with the experimental results. Results: Rehydration and increased electrical conductivity were responsible for an increase in coagulation zone size and a delay (or absence) in the occurrence of abrupt increases in electrical impedance (roll-off). While the increased electrical conductivity had a remarkable effect on enlarging the coagulation zone (an increase of 0.74cm for differences in electrical conductivity of 0.31S/m), rehydration considerably affected the delay in roll-off, which, in fact, was absent with a sufficiently high rehydration level. In contrast, thermal convection had an insignificant effect for the flow rates considered (0.05 and 1mL/min). Conclusions: Computer results suggest that rehydration and increased electrical conductivity were mainly responsible for the absence of roll-off and increased size of the coagulation zone, respectively, and in combination allow the thermal and electrical performance of ICW electrodes to be modelled during RFA. es_ES
dc.description.sponsorship This work was supported by the Government of Spain through the Spanish Plan Estatal de Investigacion, Desarrollo e Innovacion Orientada a los Retos de la Sociedad under grant number TEC2014-52383-C3-R (TEC2014-52383-C3-1-R). en_EN
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation.ispartof International Journal of Hyperthermia es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Computer modelling es_ES
dc.subject Internally cooled electrode es_ES
dc.subject Radiofrequency ablation es_ES
dc.subject Electrical conductivity es_ES
dc.subject Rehydration es_ES
dc.subject.classification MATEMATICA APLICADA es_ES
dc.subject.classification TECNOLOGIA DE ALIMENTOS es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Computational modeling of internally cooled wet (ICW) electrodes for radiofrequency ablation: Impact of rehydration, thermal convection and electrical conductivity es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1080/02656736.2017.1303751 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//TEC2014-52383-C3-1-R/ES/TECNOLOGIAS BASADAS EN ENERGIA DE RADIOFRECUENCIA Y MICROONDAS PARA CIRUGIA DE MINIMA INVASION/ es_ES
dc.rights.accessRights Abierto es_ES
dc.date.embargoEndDate 2018-03-21 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Matemática Aplicada - Departament de Matemàtica Aplicada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica es_ES
dc.description.bibliographicCitation Trujillo Guillen, M.; Bon Corbín, J.; Berjano, E. (2017). Computational modeling of internally cooled wet (ICW) electrodes for radiofrequency ablation: Impact of rehydration, thermal convection and electrical conductivity. International Journal of Hyperthermia. 33(6):624-634. doi:10.1080/02656736.2017.1303751 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1080/02656736.2017.1303751 es_ES
dc.description.upvformatpinicio 624 es_ES
dc.description.upvformatpfin 634 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 33 es_ES
dc.description.issue 6 es_ES
dc.relation.pasarela S\329986 es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad es_ES
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