Temperature dependence of thermal conductivity of liver based on various experiments and a numerical simulation for RF ablation

Hiroki Watanabe*, Nozomu Yamazaki, Yo Kobayashi, Tomoyuki Miyashita, Makoto Hashizume, Masakatsu G. Fujie

*この研究の対応する著者

研究成果: Conference contribution

20 被引用数 (Scopus)

抄録

Radiofrequency ablation (RFA) for liver cancer has increasingly been used over the past few years because RFA is minimally invasive treatment for patients. However, precise control of the formation of coagulation zones is difficult for operators due to inadequate imaging modalities. With this in mind, we have proposed a model-based robotic ablation system using numerical simulation to analyze temperature distributions in the organ to overcome this deficiency. The objective of our work is to develop a temperature-dependent thermophysical organ model to construct a precise numerical simulator for RFA. However, no standard methods exist for obtaining the thermophysical properties of biological tissues, as detailed evaluations of the accuracy of properties obtained from various experiments have not been completed. The purpose of this study was thus to measure and model the temperature dependence of thermal conductivity in hog liver from three representative methods, and to compare these results using our developed numerical simulator to reveal differences in temperature distributions stemming from differences in thermal conductivities.

本文言語English
ホスト出版物のタイトル2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
ページ3222-3228
ページ数7
DOI
出版ステータスPublished - 2010 12 1
イベント2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 - Buenos Aires, Argentina
継続期間: 2010 8 312010 9 4

出版物シリーズ

名前2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10

Conference

Conference2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
国/地域Argentina
CityBuenos Aires
Period10/8/3110/9/4

ASJC Scopus subject areas

  • 生体医工学
  • コンピュータ ビジョンおよびパターン認識
  • 信号処理
  • 健康情報学

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