Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress

[EN] Background and Objectives Radiofrequency (RF)-induced ablation can be carried out inside ducts and vessels by simultaneously dragging a bipolar catheter while applying RF power. Our objective was to characterize the relation between pullback speed, impedance progress, and temperature distributi...

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Detalles Bibliográficos
Autores: Pérez, Juan J|||0000-0001-8486-8699, Berjano, Enrique|||0000-0002-3247-2665, Ewertowska, Elzbieta
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/161976
Acceso en línea:https://riunet.upv.es/handle/10251/161976
Access Level:acceso abierto
Palabra clave:Ablation
Computer model
Duct
Numerical model
Radiofrequency ablation
TECNOLOGIA ELECTRONICA
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oai_identifier_str oai:riunet.upv.es:10251/161976
network_acronym_str ES
network_name_str España
repository_id_str
spelling Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progressPérez, Juan J|||0000-0001-8486-8699Berjano, Enrique|||0000-0002-3247-2665Ewertowska, ElzbietaAblationComputer modelDuctNumerical modelRadiofrequency ablationTECNOLOGIA ELECTRONICA[EN] Background and Objectives Radiofrequency (RF)-induced ablation can be carried out inside ducts and vessels by simultaneously dragging a bipolar catheter while applying RF power. Our objective was to characterize the relation between pullback speed, impedance progress, and temperature distribution. Study Design/Materials and Methods We built a numerical model including a bipolar catheter, which is dragged inside a duct while RF power is applied between a pair of electrodes. The model solved a triple-coupled electrical, thermal, and mechanical problem. Lesions were assessed by an Arrhenius model. The numerical model's thermal and electrical characteristics were chosen to obtain the same initial impedance value as in the experiments: 560 omega at 16 degrees C (sample temperature). Results The catheter initially remained still, and the impedance was falling during the application of power. When pullback speed was too slow (<0.4 mm/s) impedance continued to drop when the catheter began to move, creating deep lesions, overheating and impedance roll-off, while at the faster speed (0.4-1.0 mm/s) impedance first rose slightly and then reached a plateau. There was a strong inverse relation between pullback speed and lesion depth. The hottest point was always around the second electrode, creating a kind of hot wake. Conclusions These findings confirm the close relationship between pullback speed and impedance progress, and suggest that the latter factor could be used to guide the procedure and achieve effective and safe ablations along the inner path of a duct or vessel.Spanish Ministerio de Ciencia, Innovacion y Universidades under "Programa Estatal de I + D + i Orientada a los Retos de la Sociedad; Contract grant number: RTI2018-094357-B-C21; Contract grant sponsor: Predoctoral Grant from Ministry of Economy, Industry and Competitiveness (Government of Spain); Contract grant number: BES-2015-073285; Contract grant sponsor: United States Air Force Office of Scientific Research.John Wiley & SonsDepartamento de Ingeniería ElectrónicaEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialEscuela Técnica Superior de Ingeniería IndustrialBiosignals & Minimally Invasive Technologies-BioMITAgencia Estatal de InvestigaciónMinisterio de Economía y EmpresaAir Force Office of Scientific ResearchRepositorio Institucional de la Universitat Politècnica de València Riunet20202020-11-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/161976reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 BES-2015-073285 BES-2015-073285Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-094357-B-C21 MODELADO Y EXPERIMENTACION PARA TERAPIAS ABLATIVAS INNOVADORASopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1619762026-06-13T07:49:27Z
dc.title.none.fl_str_mv Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
title Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
spellingShingle Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
Pérez, Juan J|||0000-0001-8486-8699
Ablation
Computer model
Duct
Numerical model
Radiofrequency ablation
TECNOLOGIA ELECTRONICA
title_short Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
title_full Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
title_fullStr Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
title_full_unstemmed Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
title_sort Computer modeling for radiofrequency bipolar ablation inside ducts and vessels: Relation between pullback speed and impedance progress
dc.creator.none.fl_str_mv Pérez, Juan J|||0000-0001-8486-8699
Berjano, Enrique|||0000-0002-3247-2665
Ewertowska, Elzbieta
author Pérez, Juan J|||0000-0001-8486-8699
author_facet Pérez, Juan J|||0000-0001-8486-8699
Berjano, Enrique|||0000-0002-3247-2665
Ewertowska, Elzbieta
author_role author
author2 Berjano, Enrique|||0000-0002-3247-2665
Ewertowska, Elzbieta
author2_role author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Electrónica
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Escuela Técnica Superior de Ingeniería Industrial
Biosignals & Minimally Invasive Technologies-BioMIT
Agencia Estatal de Investigación
Ministerio de Economía y Empresa
Air Force Office of Scientific Research
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Ablation
Computer model
Duct
Numerical model
Radiofrequency ablation
TECNOLOGIA ELECTRONICA
topic Ablation
Computer model
Duct
Numerical model
Radiofrequency ablation
TECNOLOGIA ELECTRONICA
description [EN] Background and Objectives Radiofrequency (RF)-induced ablation can be carried out inside ducts and vessels by simultaneously dragging a bipolar catheter while applying RF power. Our objective was to characterize the relation between pullback speed, impedance progress, and temperature distribution. Study Design/Materials and Methods We built a numerical model including a bipolar catheter, which is dragged inside a duct while RF power is applied between a pair of electrodes. The model solved a triple-coupled electrical, thermal, and mechanical problem. Lesions were assessed by an Arrhenius model. The numerical model's thermal and electrical characteristics were chosen to obtain the same initial impedance value as in the experiments: 560 omega at 16 degrees C (sample temperature). Results The catheter initially remained still, and the impedance was falling during the application of power. When pullback speed was too slow (<0.4 mm/s) impedance continued to drop when the catheter began to move, creating deep lesions, overheating and impedance roll-off, while at the faster speed (0.4-1.0 mm/s) impedance first rose slightly and then reached a plateau. There was a strong inverse relation between pullback speed and lesion depth. The hottest point was always around the second electrode, creating a kind of hot wake. Conclusions These findings confirm the close relationship between pullback speed and impedance progress, and suggest that the latter factor could be used to guide the procedure and achieve effective and safe ablations along the inner path of a duct or vessel.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-11-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/161976
url https://riunet.upv.es/handle/10251/161976
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 BES-2015-073285 BES-2015-073285
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-094357-B-C21 MODELADO Y EXPERIMENTACION PARA TERAPIAS ABLATIVAS INNOVADORAS
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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