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High sensitive in-situ detection method of microbubbles for realization of feedback controlled ultrasound drug delivery

Research Project

Project/Area Number 17K17634
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Medical systems
Measurement engineering
Research InstitutionGunma University

Principal Investigator

Koda Ren  群馬大学, 大学院理工学府, 助教 (40734273)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords気泡キャビテーション / 超音波ドラッグデリバリシステム / マイクロバブル / 波動逆伝播 / 高時間分解能観測 / 超音波援用ドラッグデリバリシステム / 高時間分解能観察 / フィードバックシステム / 医用超音波システム / 計測システム / 微小気泡
Outline of Final Research Achievements

Ultrasound-mediated drug delivery systems (US-DDSs) using microbubbles have been actively researched as therapeutic techniques to minimize side effects. However, for high-efficiency DDSs, it is essential to elucidate the mechanism of the bubble cavitation mechanism and to construct a feedback system to improve the efficiency. In this study, we aimed to establish the imaging principle of the system to visualize the spatiotemporal distribution of bubble cavitation signal which can not be obtained by the conventional method, and to apply it to the cell experiment. As a result, the spatial resolution of 0.34 mm in the lateral direction of the observation probe and the time resolution of sub-microsecond can be realized simultaneously, suggesting that it is effective for the construction of a feedback system for US-DDSs.

Academic Significance and Societal Importance of the Research Achievements

気泡破壊時の雑音を測定する音響的方法や活性酸素を定量する化学的方法に対して、本手法は超音波ドラッグデリバリにおいてのフィードバックシステム構築を主眼としており、気泡クラウドの破壊過程の観測手法として他に類似観念のない画期的な試みである。また気泡から能動的に放射される超音波信号を可視化するという点において本手法の画像生成原理が従来の音響画像的手法とは異なり、原理的に大幅な感度向上を実現した。今後の発展により、気泡表面を修飾した機能性気泡を組み合わせることで癌の超早期発見が可能になるなど、気泡観測だけでなく、革新的な治療診断技術創出を拓く基盤技術になる。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (14 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Observing Bubble Cavitation by Back-Propagation of Acoustic Emission Signals2019

    • Author(s)
      Koda Ren、Origasa Takumu、Nakajima Toshitaka、Yamakoshi Yoshiki
    • Journal Title

      IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

      Volume: 66 Issue: 5 Pages: 823-833

    • DOI

      10.1109/tuffc.2019.2897983

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 気泡キャビテーション信号の高時間分解能その場計測2018

    • Author(s)
      山越 芳樹、江田 廉
    • Journal Title

      超音波テクノ

      Volume: 30 Pages: 1-6

    • Related Report
      2017 Research-status Report
  • [Presentation] パルスインバージョン法を応用した極微量気泡の高感度検出2019

    • Author(s)
      江田 廉, 菊澤朋弥
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Measurement of Bubble Cavitation Signal by Using Color Doppler Ultrasound2018

    • Author(s)
      R. Koda, T. Nakajima, Y. Yamakoshi
    • Organizer
      The 12th IEEE International Conference on Nano/Molecular Medicine and Engineering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spatiotemporal Observation of Bubble Cavitation Signal for Development of Intelligent US-DDS2018

    • Author(s)
      R. Koda, H. Hanaoka, T. Nakajima, T. Hashimoto, H. Horiuchi
    • Organizer
      The 5th International Symposium of Gunma University Medical Innovation
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超音波カラードプラを用いた気泡キャビテーション信号観測2018

    • Author(s)
      江田 廉, 堀内 弘喜, 山越 芳樹
    • Organizer
      平成30年度第4回アコースティックイメージング研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] キャビテーション信号のホログラフィック観測における超音波照射 条件と気泡特性の影響2018

    • Author(s)
      江田廉,折笠拓夢,中嶋俊貴,山越芳樹
    • Organizer
      日本超音波医学会第91回学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] イースト菌からの気泡キャビテーション信号観測による生体作用効果の計測2018

    • Author(s)
      橋本哲也,折笠拓夢,江田廉,山越芳樹
    • Organizer
      日本超音波医学会第91回学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] カラードプラ法を用いた気泡キャビテーション信号の瞬時周波数の観測2018

    • Author(s)
      堀内弘喜, 中嶋俊貴, 江田廉, 山越芳樹
    • Organizer
      日本超音波医学会第91回学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Observation of spatial-temporal dynamics of bubble cavitation during high-intensity ultrasound exposure2017

    • Author(s)
      R. Koda, T. Origasa, T. Nakajima, Y. Yamakoshi
    • Organizer
      The 38th Symposium on Ultrasonic Electronics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Temporal and Spatial Resolved Observation of Bubble Cavitation Signal by Holographic Image Reconstruction2017

    • Author(s)
      R. Koda, T. Origasa, T. Nakajima, Y. Yamakoshi
    • Organizer
      The 16th World Federation for Ultrasound in Medicine and Biology Congress
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] High Sensitive Bubble Cavitation Detection Method for Development of Intelligent US-DDS2017

    • Author(s)
      R. Koda, H. Hanaoka, Y. Yamakoshi, T. Nakajima, R. Suzuki, T. Origasa, T. Nakajima
    • Organizer
      The 4th International Symposium of Gunma University Medical Innovation
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] RF信号の波動逆伝播を用いた気泡キャビテーション観測法2017

    • Author(s)
      江田 廉, 折笠 拓夢, 中嶋 俊貴, 山越 芳樹
    • Organizer
      日本超音波医学会平成29年度第2回光超音波画像研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] RF信号の波動逆伝播を用いた気泡キャビテーション信号の瞬時周波数観測2017

    • Author(s)
      江田 廉, 折笠 拓夢, 中嶋 俊貴, 山越 芳樹
    • Organizer
      日本超音波医学会第29回関東甲信越地方会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 気泡キャビテーション信号の高時間分解能ホログラフィック観察2017

    • Author(s)
      折笠拓夢,江田 廉,山越芳樹
    • Organizer
      日本超音波医学会第90回学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 超音波パワードプラを用いた気泡キャビテーション過程の詳細観測2017

    • Author(s)
      中嶋俊貴,江田 廉,山越芳樹
    • Organizer
      日本超音波医学会第90回学術集会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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