Derivation of the relationship between the rate of temperature rise and viscoelasticity for constructing a coagulation model for liver radio frequency ablation

Xiaowei Lu, Hiraki Watanabe, Yosuke Isobe, Nozomu Yamazaki, Yo Kobayashi, Tomoyuki Miyashita, Masakatsu G. Fujie

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

    Abstract

    Radio frequency ablation (RFA) is usually conducted using ultrasound (US) imaging to monitor the insertion procedure and the coagulation extent of liver tissue which is contiguous to the RFA electrode. However, when RFA surgery is started, the US image becomes unclear because of water vapor. This disadvantage of RFA can lead to excessive and insufficient RFA thereby diminishing the advantages of the procedure. In the present study, we proposed a simulation system which shows the progress status of coagulation for liver RFA. To derive the coagulation characteristics in liver RFA, we used the viscoelasticity of liver tissue as the coagulation indicator to investigate coagulation development for liver RFA. This paper shows the acquisition procedures for analyzing the relationship between the rate of temperature and viscoelasticity. We measured the complex modulus of porcine liver tissue under different rate of temperature in RFA by controlling the output power. We showed that the viscoelasticity of liver tissue depended on temperature previous temperature increase above 60°C. This result indicates that in RFA, controlling the output power is important to completely coagulate the tumor.

    Original languageEnglish
    Title of host publicationProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
    Pages382-385
    Number of pages4
    DOIs
    Publication statusPublished - 2013
    Event2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013 - Osaka
    Duration: 2013 Jul 32013 Jul 7

    Other

    Other2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
    CityOsaka
    Period13/7/313/7/7

    Fingerprint

    Viscoelasticity
    Ablation
    Coagulation
    Radio
    Liver
    Temperature
    Tissue
    Ultrasonics
    Steam
    Surgery
    Water vapor
    Tumors
    Ultrasonography
    Electrodes
    Swine
    Imaging techniques

    ASJC Scopus subject areas

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

    Cite this

    Lu, X., Watanabe, H., Isobe, Y., Yamazaki, N., Kobayashi, Y., Miyashita, T., & Fujie, M. G. (2013). Derivation of the relationship between the rate of temperature rise and viscoelasticity for constructing a coagulation model for liver radio frequency ablation. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (pp. 382-385). [6609517] https://doi.org/10.1109/EMBC.2013.6609517

    Derivation of the relationship between the rate of temperature rise and viscoelasticity for constructing a coagulation model for liver radio frequency ablation. / Lu, Xiaowei; Watanabe, Hiraki; Isobe, Yosuke; Yamazaki, Nozomu; Kobayashi, Yo; Miyashita, Tomoyuki; Fujie, Masakatsu G.

    Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2013. p. 382-385 6609517.

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

    Lu, X, Watanabe, H, Isobe, Y, Yamazaki, N, Kobayashi, Y, Miyashita, T & Fujie, MG 2013, Derivation of the relationship between the rate of temperature rise and viscoelasticity for constructing a coagulation model for liver radio frequency ablation. in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS., 6609517, pp. 382-385, 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013, Osaka, 13/7/3. https://doi.org/10.1109/EMBC.2013.6609517
    Lu X, Watanabe H, Isobe Y, Yamazaki N, Kobayashi Y, Miyashita T et al. Derivation of the relationship between the rate of temperature rise and viscoelasticity for constructing a coagulation model for liver radio frequency ablation. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2013. p. 382-385. 6609517 https://doi.org/10.1109/EMBC.2013.6609517
    Lu, Xiaowei ; Watanabe, Hiraki ; Isobe, Yosuke ; Yamazaki, Nozomu ; Kobayashi, Yo ; Miyashita, Tomoyuki ; Fujie, Masakatsu G. / Derivation of the relationship between the rate of temperature rise and viscoelasticity for constructing a coagulation model for liver radio frequency ablation. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2013. pp. 382-385
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    AU - Kobayashi, Yo

    AU - Miyashita, Tomoyuki

    AU - Fujie, Masakatsu G.

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