Estimation of intraoperative blood flow during liver RF ablation using a finite element method-based biomechanical simulation

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

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

    Abstract

    Radiofrequency ablation is increasingly being used for liver cancer because it is a minimally invasive treatment method. However, it is difficult for the operators to precisely control the formation of coagulation zones because of the cooling effect of capillary vessels. To overcome this limitation, we have proposed a model-based robotic ablation system using a real-time numerical simulation to analyze temperature distributions in the target organ. This robot can determine the adequate amount of electric power supplied to the organ based on real-time temperature information reflecting the cooling effect provided by the simulator. The objective of this study was to develop a method to estimate the intraoperative rate of blood flow in the target organ to determine temperature distribution. In this paper, we propose a simulation-based method to estimate the rate of blood flow. We also performed an in vitro study to validate the proposed method by estimating the rate of blood flow in a hog liver. The experimental results revealed that the proposed method can be used to estimate the rate of blood flow in an organ.

    Original languageEnglish
    Title of host publicationProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
    Pages7441-7445
    Number of pages5
    DOIs
    Publication statusPublished - 2011
    Event33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011 - Boston, MA
    Duration: 2011 Aug 302011 Sep 3

    Other

    Other33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011
    CityBoston, MA
    Period11/8/3011/9/3

      Fingerprint

    ASJC Scopus subject areas

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

    Cite this

    Watanabe, H., Yamazaki, N., Kobayashi, Y., Miyashita, T., Ohdaira, T., Hashizume, M., & Fujie, M. G. (2011). Estimation of intraoperative blood flow during liver RF ablation using a finite element method-based biomechanical simulation. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (pp. 7441-7445). [6091745] https://doi.org/10.1109/IEMBS.2011.6091745