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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    14 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publication2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
    Pages3222-3228
    Number of pages7
    DOIs
    Publication statusPublished - 2010
    Event2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 - Buenos Aires
    Duration: 2010 Aug 312010 Sep 4

    Other

    Other2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
    CityBuenos Aires
    Period10/8/3110/9/4

    Fingerprint

    Ablation
    Liver
    Thermal conductivity
    Computer simulation
    Temperature distribution
    Simulators
    Experiments
    Temperature
    Coagulation
    Robotics
    Thermodynamic properties
    Tissue
    Imaging techniques

    ASJC Scopus subject areas

    • Biomedical Engineering

    Cite this

    Watanabe, H., Yamazaki, N., Kobayashi, Y., Miyashita, T., Hashizume, M., & Fujie, M. G. (2010). Temperature dependence of thermal conductivity of liver based on various experiments and a numerical simulation for RF ablation. In 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 (pp. 3222-3228). [5627200] https://doi.org/10.1109/IEMBS.2010.5627200

    Temperature dependence of thermal conductivity of liver based on various experiments and a numerical simulation for RF ablation. / Watanabe, Hiroki; Yamazaki, Nozomu; Kobayashi, Yo; Miyashita, Tomoyuki; Hashizume, Makoto; Fujie, Masakatsu G.

    2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10. 2010. p. 3222-3228 5627200.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Watanabe, H, Yamazaki, N, Kobayashi, Y, Miyashita, T, Hashizume, M & Fujie, MG 2010, Temperature dependence of thermal conductivity of liver based on various experiments and a numerical simulation for RF ablation. in 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10., 5627200, pp. 3222-3228, 2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10, Buenos Aires, 10/8/31. https://doi.org/10.1109/IEMBS.2010.5627200
    Watanabe H, Yamazaki N, Kobayashi Y, Miyashita T, Hashizume M, Fujie MG. Temperature dependence of thermal conductivity of liver based on various experiments and a numerical simulation for RF ablation. In 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10. 2010. p. 3222-3228. 5627200 https://doi.org/10.1109/IEMBS.2010.5627200
    Watanabe, Hiroki ; Yamazaki, Nozomu ; Kobayashi, Yo ; Miyashita, Tomoyuki ; Hashizume, Makoto ; Fujie, Masakatsu G. / Temperature dependence of thermal conductivity of liver based on various experiments and a numerical simulation for RF ablation. 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10. 2010. pp. 3222-3228
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