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    A tubular electrode for radiofrequency ablation therapy

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    Type
    Article
    Authors
    Antunes, Carlos Lemos Lemos Lemos
    Almeida, Tony Richard O
    Raposeiro, Nélia
    Gonçalves, Belarmino
    Álmeida, Paulo E M
    KAUST Department
    Red Sea Research Center (RSRC)
    Date
    2012-07-06
    Permanent link to this record
    http://hdl.handle.net/10754/575564
    
    Metadata
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    Abstract
    Purpose – Due to its good mechanical and biocompatibility characteristics, nitinol SEMS is a popular endoprothesis used for relieving stricture problems in hollow organs due to carcinomas. Besides its mechanical application, SEMS can be regarded as well as potential electrode for performing RF ablation therapy on the tumor. The purpose of this work is to perform numerical and experimental analyses in order to characterize the lesion volume induced in biological tissue using this kind of tubular electrode. Design/methodology/approach – Data concerning electrical conductivity and dimension of the damaged tissue after RF ablation procedure were obtained from ex vivo samples. Next, numerical models using 3D finite element method were obtained reassembling the conditions considered at experimentation setup and results were compared. Findings – Numerical and experimental results show that a regular volume of damaged tissue can be obtained considering this type of electrode. Also, results obtained from numerical simulation are close to those obtained by experimentation. Originality/value – SEMSs, commonly used as devices to minimize obstruction problems due to the growth of tumors, may still be considered as an active electrode for RF ablation procedures. A method considering this observation is presented in this paper. Also, numerical simulation can be regarded in this case as a tool for determining the lesion volume.
    Citation
    Antunes, C. L., Almeida, T. R. O., Raposeiro, N., Gonçalves, B., & Almeida, P. (2012). Using a tubular electrode for radiofrequency ablation. COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 31(4), 1077–1086. doi:10.1108/03321641211227320
    Publisher
    Emerald
    Journal
    COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
    DOI
    10.1108/03321641211227320
    ae974a485f413a2113503eed53cd6c53
    10.1108/03321641211227320
    Scopus Count
    Collections
    Articles; Red Sea Research Center (RSRC)

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