Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment

Hiroki Watanabe, Nozomu Yamazaki, Yosuke Isobe, Xiaowei Lu, Yo Kobayashi, Tomoyuki Miyashita, Takeshi Ohdaira, Makoto Hashizume, Masakatsu G. Fujie

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

    6 Citations (Scopus)

    Abstract

    Radiofrequency (RF) ablation is increasingly used to treat cancer because it is minimally invasive. However, it is difficult for operators to control precisely the formation of coagulation zones because of the inadequacies of imaging modalities. To overcome this limitation, we previously proposed a model-based robotic ablation system that can create the required size and shape of coagulation zone based on the dimensions of the tumor. At the heart of such a robotic system is a precise temperature distribution simulator for RF ablation. In this article, we evaluated the simulation accuracy of two numerical simulation liver models, one using a constant thermal conductivity value and the other using temperature-dependent thermal conductivity values, compared with temperatures obtained using in vitro experiments. The liver model that reflected the temperature dependence of thermal conductivity did not result in a large increase of simulation accuracy compared with the temperature-independent model in the temperature range achieved during clinical RF ablation.

    Original languageEnglish
    Title of host publicationProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
    Pages5712-5717
    Number of pages6
    DOIs
    Publication statusPublished - 2012
    Event34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2012 - San Diego, CA
    Duration: 2012 Aug 282012 Sep 1

    Other

    Other34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2012
    CitySan Diego, CA
    Period12/8/2812/9/1

    Fingerprint

    Thermal Conductivity
    Ablation
    Liver
    Thermal conductivity
    Temperature
    Coagulation
    Experiments
    Robotics
    Tumors
    Temperature distribution
    Simulators
    In Vitro Techniques
    Neoplasms
    Imaging techniques
    Computer simulation

    ASJC Scopus subject areas

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

    Cite this

    Watanabe, H., Yamazaki, N., Isobe, Y., Lu, X., Kobayashi, Y., Miyashita, T., ... Fujie, M. G. (2012). Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (pp. 5712-5717). [6347292] https://doi.org/10.1109/EMBC.2012.6347292

    Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment. / Watanabe, Hiroki; Yamazaki, Nozomu; Isobe, Yosuke; Lu, Xiaowei; Kobayashi, Yo; Miyashita, Tomoyuki; Ohdaira, Takeshi; Hashizume, Makoto; Fujie, Masakatsu G.

    Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2012. p. 5712-5717 6347292.

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

    Watanabe, H, Yamazaki, N, Isobe, Y, Lu, X, Kobayashi, Y, Miyashita, T, Ohdaira, T, Hashizume, M & Fujie, MG 2012, Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment. in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS., 6347292, pp. 5712-5717, 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2012, San Diego, CA, 12/8/28. https://doi.org/10.1109/EMBC.2012.6347292
    Watanabe H, Yamazaki N, Isobe Y, Lu X, Kobayashi Y, Miyashita T et al. Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2012. p. 5712-5717. 6347292 https://doi.org/10.1109/EMBC.2012.6347292
    Watanabe, Hiroki ; Yamazaki, Nozomu ; Isobe, Yosuke ; Lu, Xiaowei ; Kobayashi, Yo ; Miyashita, Tomoyuki ; Ohdaira, Takeshi ; Hashizume, Makoto ; Fujie, Masakatsu G. / Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2012. pp. 5712-5717
    @inproceedings{6927cb0a5fdf44a18787ac0911d337ec,
    title = "Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment",
    abstract = "Radiofrequency (RF) ablation is increasingly used to treat cancer because it is minimally invasive. However, it is difficult for operators to control precisely the formation of coagulation zones because of the inadequacies of imaging modalities. To overcome this limitation, we previously proposed a model-based robotic ablation system that can create the required size and shape of coagulation zone based on the dimensions of the tumor. At the heart of such a robotic system is a precise temperature distribution simulator for RF ablation. In this article, we evaluated the simulation accuracy of two numerical simulation liver models, one using a constant thermal conductivity value and the other using temperature-dependent thermal conductivity values, compared with temperatures obtained using in vitro experiments. The liver model that reflected the temperature dependence of thermal conductivity did not result in a large increase of simulation accuracy compared with the temperature-independent model in the temperature range achieved during clinical RF ablation.",
    author = "Hiroki Watanabe and Nozomu Yamazaki and Yosuke Isobe and Xiaowei Lu and Yo Kobayashi and Tomoyuki Miyashita and Takeshi Ohdaira and Makoto Hashizume and Fujie, {Masakatsu G.}",
    year = "2012",
    doi = "10.1109/EMBC.2012.6347292",
    language = "English",
    isbn = "9781424441198",
    pages = "5712--5717",
    booktitle = "Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS",

    }

    TY - GEN

    T1 - Validation of accuracy of liver model with temperature-dependent thermal conductivity by comparing the simulation and in vitro RF ablation experiment

    AU - Watanabe, Hiroki

    AU - Yamazaki, Nozomu

    AU - Isobe, Yosuke

    AU - Lu, Xiaowei

    AU - Kobayashi, Yo

    AU - Miyashita, Tomoyuki

    AU - Ohdaira, Takeshi

    AU - Hashizume, Makoto

    AU - Fujie, Masakatsu G.

    PY - 2012

    Y1 - 2012

    N2 - Radiofrequency (RF) ablation is increasingly used to treat cancer because it is minimally invasive. However, it is difficult for operators to control precisely the formation of coagulation zones because of the inadequacies of imaging modalities. To overcome this limitation, we previously proposed a model-based robotic ablation system that can create the required size and shape of coagulation zone based on the dimensions of the tumor. At the heart of such a robotic system is a precise temperature distribution simulator for RF ablation. In this article, we evaluated the simulation accuracy of two numerical simulation liver models, one using a constant thermal conductivity value and the other using temperature-dependent thermal conductivity values, compared with temperatures obtained using in vitro experiments. The liver model that reflected the temperature dependence of thermal conductivity did not result in a large increase of simulation accuracy compared with the temperature-independent model in the temperature range achieved during clinical RF ablation.

    AB - Radiofrequency (RF) ablation is increasingly used to treat cancer because it is minimally invasive. However, it is difficult for operators to control precisely the formation of coagulation zones because of the inadequacies of imaging modalities. To overcome this limitation, we previously proposed a model-based robotic ablation system that can create the required size and shape of coagulation zone based on the dimensions of the tumor. At the heart of such a robotic system is a precise temperature distribution simulator for RF ablation. In this article, we evaluated the simulation accuracy of two numerical simulation liver models, one using a constant thermal conductivity value and the other using temperature-dependent thermal conductivity values, compared with temperatures obtained using in vitro experiments. The liver model that reflected the temperature dependence of thermal conductivity did not result in a large increase of simulation accuracy compared with the temperature-independent model in the temperature range achieved during clinical RF ablation.

    UR - http://www.scopus.com/inward/record.url?scp=84870795305&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84870795305&partnerID=8YFLogxK

    U2 - 10.1109/EMBC.2012.6347292

    DO - 10.1109/EMBC.2012.6347292

    M3 - Conference contribution

    C2 - 23367227

    AN - SCOPUS:84870795305

    SN - 9781424441198

    SP - 5712

    EP - 5717

    BT - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS

    ER -