Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation

Our aim was to compare the different methods of modeling the effect of circulating blood flow on the thermal lesion dimensions created by radio frequency (RF) cardiac ablation and on the maximum blood temperature. Computational models were built to study the temperature distributions and lesion dime...

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Detalles Bibliográficos
Autores: González-Suárez, A., Berjano, E.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Basque Center for Applied Mathematics (BCAM)
Repositorio:BIRD. BCAM's Institutional Repository Data
OAI Identifier:oai:bird.bcamath.org:20.500.11824/271
Acceso en línea:http://hdl.handle.net/20.500.11824/271
Access Level:acceso abierto
Palabra clave:Blood flow
Cardiac ablation
Catheter ablation
Computer modeling
Radio frequency (RF) ablation
Thermal modeling
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spelling Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablationGonzález-Suárez, A.Berjano, E.Blood flowCardiac ablationCatheter ablationComputer modelingRadio frequency (RF) ablationThermal modelingOur aim was to compare the different methods of modeling the effect of circulating blood flow on the thermal lesion dimensions created by radio frequency (RF) cardiac ablation and on the maximum blood temperature. Computational models were built to study the temperature distributions and lesion dimensions created by a nonirrigated electrode by two RF energy delivery protocols (constant voltage and constant temperature) under high and low blood flow conditions. Four methods of modeling the effect of circulating blood flowon lesion dimensions and temperature distribution were compared. Three of them considered convective coefficients at the electrode-blood and tissue-blood interfaces to model blood flow: 1) without including blood as a part of the domain; 2) constant electrical conductivity of blood; and 3) temperaturedependent electrical conductivity of blood (+2%/°C). Method 4) included blood motion andwas considered to be a reference method for comparison purposes. Only Method 4 provided a realistic blood temperature distribution.The other three methods predicted lesion depth values similar to those of the reference method (differences smaller than 1 mm), regardless of ablation mode and blood flow conditions. Considering the aspects of lesion size and maximum temperature reached in blood and tissue, Method 2 seems to be the most suitable alternative to Method 4 in order to reduce the computational complexity. Our findings could have an important implication in future studies of RF cardiac ablation, in particular, in choosing the most suitable method to model the thermal effect of circulating blood.201620162016info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/20.500.11824/271reponame:BIRD. BCAM's Institutional Repository Datainstname:Basque Center for Applied Mathematics (BCAM)Ingléshttp://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7174551Reconocimiento-NoComercial-CompartirIgual 3.0 Españahttp://creativecommons.org/licenses/by-nc-sa/3.0/es/info:eu-repo/semantics/openAccessoai:bird.bcamath.org:20.500.11824/2712026-06-19T12:47:47Z
dc.title.none.fl_str_mv Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
title Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
spellingShingle Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
González-Suárez, A.
Blood flow
Cardiac ablation
Catheter ablation
Computer modeling
Radio frequency (RF) ablation
Thermal modeling
title_short Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
title_full Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
title_fullStr Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
title_full_unstemmed Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
title_sort Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
dc.creator.none.fl_str_mv González-Suárez, A.
Berjano, E.
author González-Suárez, A.
author_facet González-Suárez, A.
Berjano, E.
author_role author
author2 Berjano, E.
author2_role author
dc.subject.none.fl_str_mv Blood flow
Cardiac ablation
Catheter ablation
Computer modeling
Radio frequency (RF) ablation
Thermal modeling
topic Blood flow
Cardiac ablation
Catheter ablation
Computer modeling
Radio frequency (RF) ablation
Thermal modeling
description Our aim was to compare the different methods of modeling the effect of circulating blood flow on the thermal lesion dimensions created by radio frequency (RF) cardiac ablation and on the maximum blood temperature. Computational models were built to study the temperature distributions and lesion dimensions created by a nonirrigated electrode by two RF energy delivery protocols (constant voltage and constant temperature) under high and low blood flow conditions. Four methods of modeling the effect of circulating blood flowon lesion dimensions and temperature distribution were compared. Three of them considered convective coefficients at the electrode-blood and tissue-blood interfaces to model blood flow: 1) without including blood as a part of the domain; 2) constant electrical conductivity of blood; and 3) temperaturedependent electrical conductivity of blood (+2%/°C). Method 4) included blood motion andwas considered to be a reference method for comparison purposes. Only Method 4 provided a realistic blood temperature distribution.The other three methods predicted lesion depth values similar to those of the reference method (differences smaller than 1 mm), regardless of ablation mode and blood flow conditions. Considering the aspects of lesion size and maximum temperature reached in blood and tissue, Method 2 seems to be the most suitable alternative to Method 4 in order to reduce the computational complexity. Our findings could have an important implication in future studies of RF cardiac ablation, in particular, in choosing the most suitable method to model the thermal effect of circulating blood.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.11824/271
url http://hdl.handle.net/20.500.11824/271
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7174551
dc.rights.none.fl_str_mv Reconocimiento-NoComercial-CompartirIgual 3.0 España
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Reconocimiento-NoComercial-CompartirIgual 3.0 España
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:BIRD. BCAM's Institutional Repository Data
instname:Basque Center for Applied Mathematics (BCAM)
instname_str Basque Center for Applied Mathematics (BCAM)
reponame_str BIRD. BCAM's Institutional Repository Data
collection BIRD. BCAM's Institutional Repository Data
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