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Studies of piezoelectricity and ferroelectricity of biological tissues by acoustic-induced electromagnetic method and development for medical applications

Research Project

Project/Area Number 20H04500
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Ikushima Kenji  東京農工大学, 工学(系)研究科(研究院), 教授 (20334302)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Keywords生体医工学 / 超音波 / 音響誘起電磁法 / 圧電効果 / コラーゲン / 線維化
Outline of Research at the Start

本研究の目的は、超音波を利用する新手法――音響誘起電磁法(ASEM)法――を用いて、生体組織における圧電性と強誘電性を明らかにし、医療診断への可能性を追求することである。骨やアキレス腱などのコラーゲン配向性をもつ生体組織が圧電性を有することは半世紀以上前に乾燥したサンプルにおいて報告されている。近年我々が開発したASEM法の特徴は、(i) 生体環境に近い湿潤した組織や臓器の圧電性を評価できる、(ii) 超音波走査により圧電分布を画像化できる、ことである。そこで本研究では、生体組織の圧電性・強誘電性を組織・器官・臓器レベルで解明し、医療診断応用の可能性を追求することである。

Outline of Final Research Achievements

In this study, the piezoelectricity of biological tissues was clarified using the acoustically induced electromagnetic (ASEM) method, and its potential for medical diagnosis was pursued. The main results are as follows: (1) a large anisotropy of acoustic-induced polarization in biological fibrous tissues (bone, tendon, muscle tissue, etc.) was confirmed, suggesting that it is associated with symmetry of the fibrous structure; (2) a trend of decreased acoustic-induced polarization was found in rat osteoporosis models, indicating its potential for osteoporosis diagnosis; (3) human measurements have become possible and successful imaging of acoustic-induced polarization in bones, tendons, and other tissues in the body has been achieved.

Academic Significance and Societal Importance of the Research Achievements

本研究により、生体線維組織において超音波によって誘起される電気分極(音響誘起分極)は、等方的に生じるわけではなく、コラーゲン等の線維状タンパク質の配列や構造に起因していることが示唆された。さらに、ラット骨粗鬆症モデルにおいては分極が小さくなることが明らかにされた。これらの結果から、湿潤または生きた生体組織において構造由来の圧電分極が生じることが確認され、その分極の大きさや異方性が運動器官組織の健全性を評価する指標になることが見込まれる。一方、ヒト体内の骨や腱からの分極を画像化することに成功し、基礎研究から臨床研究へ進む大きな一歩を踏み出した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (31 results)

All 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (19 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (5 results) (of which Overseas: 2 results)

  • [Journal Article] Acoustically induced electric and magnetic polarizations and their sensing applications2023

    • Author(s)
      Kenji Ikushima
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: - Issue: SJ Pages: SJ0802-SJ0802

    • DOI

      10.35848/1347-4065/acc8dc

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Tensile Residual Stress in Welded Steel Plates Using Acoustically Stimulated Electromagnetic Response2022

    • Author(s)
      Suzuki Yuhei, Hosokawa Daisuke, Ikushima Kenji
    • Journal Title

      IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

      Volume: 69 Issue: 4 Pages: 1478-1484

    • DOI

      10.1109/tuffc.2022.3149386

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 音響誘起電磁応答法を用いた鉄鋼材料の非破壊検査 ~残留応力評価とイメージング技術~2022

    • Author(s)
      鈴木優平、生嶋健司
    • Journal Title

      IIC REVIEW

      Volume: 67 Pages: 23-27

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Anisotropy of acoustically induced electric polarization in biological tissues2021

    • Author(s)
      Y. Anzai, K. Ikushima, M. Matsukawa
    • Journal Title

      Proceedings of Symposium on Ultrasonic Electronics 42

      Volume: s3186

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Flaw Detection for Thin Sheet Using Acoustic Stimulated Electromagnetic Wave Technique2020

    • Author(s)
      J. Yotsuji, K. Ikushima, and H. Yamada
    • Journal Title

      ISIJ International

      Volume: 60 Issue: 5 Pages: 948-953

    • DOI

      10.2355/isijinternational.ISIJINT-2019-481

    • NAID

      130007843543

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2020-05-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tensile-stress dependence of magnetic hysteresis properties measured by the acoustically stimulated electromagnetic response in steel2020

    • Author(s)
      Y. Suzuki, H. Yamada, and K. Ikushima
    • Journal Title

      IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

      Volume: 67 Issue: 4 Pages: 825-831

    • DOI

      10.1109/tuffc.2019.2956040

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 音響誘起電気分極の新たな検出法の検討2023

    • Author(s)
      榎本淑乃、生嶋健司
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Acoustically induced electric polarization in bone and its anisotropy2022

    • Author(s)
      Yuki Sakakura, Yamato Anzai, Yoshitsugu Kojima, Mami Matsukawa, Kenji Ikushima
    • Organizer
      2022 IEEE International Ultrasonics Symposium (IEEE IUS)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First Human Experience with Acoustically Stimulated Electromagnetic (ASEM) Signal Measurement of Bone2022

    • Author(s)
      Kazuyo Ito, Yuki Sakakura, Nobuo Niimi, Masato Mori, Nobuto Kaitoh, Kenji Ikushima
    • Organizer
      The 43rd Symposium on UltraSonic Electronics (USE2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Acoustically induced electric and magnetic polarization and its sensing applications2022

    • Author(s)
      Kenji Ikushima
    • Organizer
      The 43rd Symposium on UltraSonic Electronics (USE2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 筋組織の音響誘起電気分極2022

    • Author(s)
      菊地純奈、坂倉佑紀、生嶋健司
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] アキレス腱における音響誘起電気分極の引張応力依存性2022

    • Author(s)
      皆藤信人、坂倉佑紀、伊藤一陽、生嶋健司
    • Organizer
      日本超音波医学会 第34回関東甲信越地方会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 脱灰された大腿骨皮質骨の音響誘起電気分極2022

    • Author(s)
      坂倉佑紀, 安齋也真人, 生嶋健司, 松川 真美
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Attempt toward Medication Adherence Using Acoustically Stimulated Electromagnetic Method2021

    • Author(s)
      N. Kaitoh, K. Ikushima
    • Organizer
      IEEE International Ultrasonics Symposium (IEEE IUS)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Applying pulse-compression method to acoustic stimulated electromagnetic measurements2021

    • Author(s)
      K. Ito, N. Nobuo, K. Ikushima
    • Organizer
      IEEE International Ultrasonics Symposium (IEEE IUS)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anisotropy of acoustically induced electric polarization in biological tissues2021

    • Author(s)
      Y. Anzai, K. Ikushima, M. Matsukawa
    • Organizer
      USE Symposium on UltraSonic electronics (USE2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 音響誘起電磁応答による残留応力イメージング2021

    • Author(s)
      細川 大介,鈴木 優平,生嶋健司
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] パルス圧縮法を用いた音響誘起電磁応答の高速測定2021

    • Author(s)
      伊藤和馬,皆藤信人,新実信夫,生嶋健司
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 生体繊維組織の圧電分極の引張応力依存性2021

    • Author(s)
      皆藤信人,安齋也真人,伊藤和馬,生嶋健司
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超音波による電気・磁気センシング2020

    • Author(s)
      生嶋健司
    • Organizer
      日本磁気学会第228回研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 音響誘起電磁法を用いた溶接鋼材における残留応力分布の評価 Ⅱ2020

    • Author(s)
      細川大介、鈴木優平、市川裕一、山田尚人、生嶋健司
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 音響誘起電磁法を用いた腎不全による線維化の検出Ⅱ2020

    • Author(s)
      井上智博、安齋也真人、熊本貴司、生嶋健司、谷口歩、今村亮一、野々村祝夫
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 生体組織における超音波誘起電気分極の異方性2020

    • Author(s)
      安齋也真人、熊本貴司、生嶋健司、道本樹、松川真美
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 音響誘起電磁応答で観測される局所的保磁力の応力依存性2020

    • Author(s)
      細川大介、鈴木優平、山田尚人、生嶋健司
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 音響誘起電磁法を用いた服薬アドヒアランス測定の試み2020

    • Author(s)
      皆藤信人, 生嶋健司
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Remarks] IKUSHIMA GROUP

    • URL

      http://web.tuat.ac.jp/~ikushima/index_j.html

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Patent(Industrial Property Rights)] 測定装置及び測定方法2023

    • Inventor(s)
      生嶋健司,安齋也真人,坂倉佑紀
    • Industrial Property Rights Holder
      JST
    • Industrial Property Rights Type
      特許
    • Filing Date
      2023
    • Related Report
      2022 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 測定装置及び測定方法2023

    • Inventor(s)
      生嶋健司,皆藤信人
    • Industrial Property Rights Holder
      JST
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-065838
    • Filing Date
      2023
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 測定装置及び測定方法2022

    • Inventor(s)
      生嶋健司、安齋也真人、坂倉佑紀
    • Industrial Property Rights Holder
      東京農工大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-079646
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 被測定対象の特性測定装置及び被測定対象の特性測定方法2022

    • Inventor(s)
      伊藤和馬,新実信夫,生嶋 健司
    • Industrial Property Rights Holder
      JST
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 被測定対象の特性測定装置及び被測定対象の特性測定方法2021

    • Inventor(s)
      伊藤和馬,新実信夫,生嶋健司
    • Industrial Property Rights Holder
      東京農工大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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