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Computer modelling of RF ablation in cortical osteoid osteoma: Assessment of the insulating effect of the reactive zone

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Computer modelling of RF ablation in cortical osteoid osteoma: Assessment of the insulating effect of the reactive zone

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dc.contributor.author Irastorza, Ramiro M. es_ES
dc.contributor.author Trujillo Guillen, Macarena es_ES
dc.contributor.author Martel Villagran, Jose es_ES
dc.contributor.author Berjano, Enrique es_ES
dc.date.accessioned 2017-10-17T09:46:13Z
dc.date.available 2017-10-17T09:46:13Z
dc.date.issued 2016-02-10
dc.identifier.issn 0265-6736
dc.identifier.uri http://hdl.handle.net/10251/89273
dc.description This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Hyperthermia on 10 Feb 2016, available online: http://www.tandfonline.com/10.3109/02656736.2015.1135998 es_ES
dc.description.abstract Purpose: The aim was to study by computer simulations the insulating role of the reactive zone surrounding a cortical osteoid osteoma (OO) in terms of electrical and thermal performance during radiofrequency ablation (RFA). Material and methods: We modelled a cortical OO consisting of a nidus (10 mm diameter) enclosed by a reactive zone. The OO was near a layer of cortical bone 1.5 mm thick. Trabecular bone partially surrounds the OO and there was muscle around the cortical bone layer. We modelled RF ablations with a noncooled-tip 17-gauge needle electrode (300 s duration and 90 C target temperature). Sensitivity analyses were conducted assuming a reactive zone electrical conductivity value (rz) within the limits of the cortical and trabecular bone, i.e. 0.02 S/m and 0.087 S/m, respectively. In this way we were really modelling the different degrees of osteosclerosis associated with the reactive zone. Results: The presence of the reactive zone drastically reduced the maximum temperature reached outside it. The temperature drop was proportional to the thickness of the reactive zone: from 68 C when it was absent to 44 C when it is 7.5 mm thick. Higher nidus conductivity values (n) implied higher temperatures, while lower temperatures meant higher rz values. Changing rz from 0.02 S/m to 0.087 S/m reduced lesion diameters from 2.4 cm to 1.8 cm. Conclusions: The computer results suggest that the reactive zone plays the role of insulator in terms of reducing the temperature in the surrounding area. Keywor es_ES
dc.description.sponsorship This work was supported by a grant from the Agencia Nacional de Promocion Cientifica y Tecnologica de Argentina (Ref. PICT-2012-1201), and by the Spanish Programa 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). The authors alone are responsible for the content and writing of the paper. en_EN
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation Agencia Nacional de Promocion Cientifica y Tecnologica de Argentina PICT-2012-1201 es_ES
dc.relation Spanish Programa Estatal de Investigacion, Desarrollo e Innovacion Orientada a los Retos de la Sociedad TEC2014-52383-C3-R (TEC2014-52383-C3-1-R) es_ES
dc.relation.ispartof International Journal of Hyperthermia es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Computer modeling es_ES
dc.subject Cortical bone es_ES
dc.subject Finite element method es_ES
dc.subject Osteoid osteoma es_ES
dc.subject Radiofrequency ablation es_ES
dc.subject Reactive zone es_ES
dc.subject.classification MATEMATICA APLICADA es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Computer modelling of RF ablation in cortical osteoid osteoma: Assessment of the insulating effect of the reactive zone es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3109/02656736.2015.1135998
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Arquitectura - Escola Tècnica Superior d'Arquitectura es_ES
dc.description.bibliographicCitation Irastorza, RM.; Trujillo Guillen, M.; Martel Villagran, J.; Berjano, E. (2016). Computer modelling of RF ablation in cortical osteoid osteoma: Assessment of the insulating effect of the reactive zone. International Journal of Hyperthermia. 32(3):221-230. doi:10.3109/02656736.2015.1135998 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.3109/02656736.2015.1135998 es_ES
dc.description.upvformatpinicio 221 es_ES
dc.description.upvformatpfin 230 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 32 es_ES
dc.description.issue 3 es_ES
dc.relation.senia 313441 es_ES
dc.identifier.pmid 26862788


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