Method for estimating the temperature distribution associated with the vessel cooling effect in radio frequency ablation

Xiaowei Lu, Hayato Kikuchi, Kazumasa Hirooka, Yosuke Isobe, Hiroki Watanabe, Yo Kobayashi, Tomoyuki Miyashita, Masakatsu G. Fujie

    研究成果: Conference contribution

    2 引用 (Scopus)

    抄録

    Recently, radio frequency ablation (RFA) has become one of the most popular thermal treatments for liver cancer. RFA is minimally invasive and effective in inducing tumor coagulation, however, because use the procedure depends on the experience of the physician, consistent accuracy cannot be guaranteed. In particular, when the tumor is close to a large vessel, a suboptimal ablation margin can result in tumor recurrence. To improve the accuracy of RFA treatment, we have developed an RFA supporting system, which was constructed by using finite element method and operated by means of a model-based control method. In this study, we focused on the cooling effect of flow volume inside a large vessel during RFA, and analyzed heat transfer between the large vessel and liver tissue using a model. We derived the heat transfer parameter (the Nusselt number (Nu)) between the large vessel and liver tissue during RFA by using a finite-element method (FEM). When the Nu for FEM analysis had a value of 3, the FEM analysis model was representative of the actual ablation objective, and the maximum error between FEM analysis and the measurement results was within 2.0[°C]. Thus, it was suggested that the Nu was effective for FEM analysis regarding heat transfer between a large vessel and tissue. However, according to the differences between the results of FEM analysis and measurements concerning the three livers, the heat transfer volume was determined by the Nu, which is different individually in common with other thermal properties. In conclusion, it is necessary to consider the individual differences in the heat transfer volume parameter for FEM analysis.

    元の言語English
    ホスト出版物のタイトルProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
    出版者Institute of Electrical and Electronics Engineers Inc.
    ページ4836-4839
    ページ数4
    2015-November
    ISBN(印刷物)9781424492718
    DOI
    出版物ステータスPublished - 2015 11 4
    イベント37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015 - Milan, Italy
    継続期間: 2015 8 252015 8 29

    Other

    Other37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015
    Italy
    Milan
    期間15/8/2515/8/29

    Fingerprint

    Ablation
    Radio
    Temperature distribution
    Finite Element Analysis
    Cooling
    Finite element method
    Temperature
    Hot Temperature
    Liver
    Heat transfer
    Tumors
    Tissue
    Nusselt number
    Coagulation
    Neoplasms
    Liver Neoplasms
    Thermodynamic properties
    Individuality
    Heat treatment
    Physicians

    ASJC Scopus subject areas

    • Computer Vision and Pattern Recognition
    • Signal Processing
    • Biomedical Engineering
    • Health Informatics

    これを引用

    Lu, X., Kikuchi, H., Hirooka, K., Isobe, Y., Watanabe, H., Kobayashi, Y., ... Fujie, M. G. (2015). Method for estimating the temperature distribution associated with the vessel cooling effect in radio frequency ablation. : Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (巻 2015-November, pp. 4836-4839). [7319476] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2015.7319476

    Method for estimating the temperature distribution associated with the vessel cooling effect in radio frequency ablation. / Lu, Xiaowei; Kikuchi, Hayato; Hirooka, Kazumasa; Isobe, Yosuke; Watanabe, Hiroki; Kobayashi, Yo; Miyashita, Tomoyuki; Fujie, Masakatsu G.

    Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 巻 2015-November Institute of Electrical and Electronics Engineers Inc., 2015. p. 4836-4839 7319476.

    研究成果: Conference contribution

    Lu, X, Kikuchi, H, Hirooka, K, Isobe, Y, Watanabe, H, Kobayashi, Y, Miyashita, T & Fujie, MG 2015, Method for estimating the temperature distribution associated with the vessel cooling effect in radio frequency ablation. : Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 巻. 2015-November, 7319476, Institute of Electrical and Electronics Engineers Inc., pp. 4836-4839, 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015, Milan, Italy, 15/8/25. https://doi.org/10.1109/EMBC.2015.7319476
    Lu X, Kikuchi H, Hirooka K, Isobe Y, Watanabe H, Kobayashi Y その他. Method for estimating the temperature distribution associated with the vessel cooling effect in radio frequency ablation. : Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 巻 2015-November. Institute of Electrical and Electronics Engineers Inc. 2015. p. 4836-4839. 7319476 https://doi.org/10.1109/EMBC.2015.7319476
    Lu, Xiaowei ; Kikuchi, Hayato ; Hirooka, Kazumasa ; Isobe, Yosuke ; Watanabe, Hiroki ; Kobayashi, Yo ; Miyashita, Tomoyuki ; Fujie, Masakatsu G. / Method for estimating the temperature distribution associated with the vessel cooling effect in radio frequency ablation. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 巻 2015-November Institute of Electrical and Electronics Engineers Inc., 2015. pp. 4836-4839
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    AU - Watanabe, Hiroki

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