Effect of input waveform pattern and large blood vessel existence on destruction of liver tumor using radiofrequency ablation: Finite element analysis

Dohyung Lim, Bumseok Namgung, Dae Gon Woo, Jin Seung Choi, Hansung Kim, Gye Rae Tack

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Much research has been directed at improving the effectiveness of the radiofrequency (RF) ablation of hepatocellular carcinomas. In that point of view, this study was performed to provide comprehensive information of the relation between RF waveforms and thermodynamic response of the tissue with the consideration of four different types of RF waveforms (half-sine, half-square, half-exponential, and damped-sine) to maximize the amount of tumor tissue removed while maintaining the advantages of RF ablation. For the aim of this study, finite element models incorporating results from previous numerical models were used and validated with ex vivo experiments. From analyses of the entire results, we concluded that this study may prove valuable as a first step in providing comprehensive information of the relation between various RF waveforms and thermodynamic responses within the tissue during the RF ablation process. This study may also contribute toward studies to determine an optimum RF waveform capable of maximizing the amount of tumor tissue removed while maintaining the advantages of RF ablation.

Original languageEnglish
JournalJournal of Biomechanical Engineering
Volume132
Issue number6
DOIs
Publication statusPublished - 2010 Jun 1

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Finite Element Analysis
Blood vessels
Ablation
Liver
Blood Vessels
Tumors
Tissue
Finite element method
Thermodynamics
Neoplasms
Numerical models
Hepatocellular Carcinoma
Research
Experiments

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Physiology (medical)

Cite this

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abstract = "Much research has been directed at improving the effectiveness of the radiofrequency (RF) ablation of hepatocellular carcinomas. In that point of view, this study was performed to provide comprehensive information of the relation between RF waveforms and thermodynamic response of the tissue with the consideration of four different types of RF waveforms (half-sine, half-square, half-exponential, and damped-sine) to maximize the amount of tumor tissue removed while maintaining the advantages of RF ablation. For the aim of this study, finite element models incorporating results from previous numerical models were used and validated with ex vivo experiments. From analyses of the entire results, we concluded that this study may prove valuable as a first step in providing comprehensive information of the relation between various RF waveforms and thermodynamic responses within the tissue during the RF ablation process. This study may also contribute toward studies to determine an optimum RF waveform capable of maximizing the amount of tumor tissue removed while maintaining the advantages of RF ablation.",
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Effect of input waveform pattern and large blood vessel existence on destruction of liver tumor using radiofrequency ablation : Finite element analysis. / Lim, Dohyung; Namgung, Bumseok; Woo, Dae Gon; Choi, Jin Seung; Kim, Hansung; Tack, Gye Rae.

In: Journal of Biomechanical Engineering, Vol. 132, No. 6, 01.06.2010.

Research output: Contribution to journalArticle

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