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Noninvasive measurements of piezoelectric signals in cancellous bone generated by ultrasound irradiation

Research Project

Project/Area Number 21K12638
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionAkashi National College of Technology

Principal Investigator

Hosokawa Atsushi  明石工業高等専門学校, 電気情報工学科, 准教授 (00321456)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2023: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords海綿骨 / 圧電信号 / 超音波 / 数値シミュレーション / 非侵襲測定
Outline of Research at the Start

超音波照射による骨折治療が行われているが、その効果を向上させるためには、骨生成の物理的メカニズムを十分に理解する必要がある。骨生成には骨が有する圧電特性が関係すると考えられているが、超音波(高周波)帯域における骨の圧電特性について明らかになってきたのは近年である。特に、多孔性構造を有する海綿骨の圧電特性は、その測定の困難さから、ほとんど分かっていない。
研究代表者は、切り出した(in vitroでの)海綿骨試料を用いて、超音波照射時の圧電特性の測定を行っている。本研究では、非侵襲測定(in vivo測定)の前段階として、海綿骨が皮質骨で囲まれた元の状態のまま(in situ)での測定を行う。

Outline of Final Research Achievements

Using a PE-FDTD (PiezoElectric Finite-Difference Time-Domain) method, a numerical simulation program for piezoelectric signals generated in cancellous bone by ultrasound irradiation could be developed. Not only the piezoelectric signal properties in cancellous bone alone but also the properties in the bone under condition close to actual in situ could be investigated by this program. Specifically, the piezoelectric signal generation at the deep depth of cancellous bone and the effect of the cortical bone layer on the cancellous bone surface on the piezoelectric signals were investigated. As a result for these investigations, it was concluded that it is necessary to devise and develop a new method to observe the piezoelectric signals in cancellous bone in situ.

Academic Significance and Societal Importance of the Research Achievements

超音波照射による骨折治癒の促進はすでに実用されているが、海綿骨が大部分を占める関節骨の骨折に対してはまだ用いられていない。また、骨折治癒(骨生成)には骨が有する圧電性が関係していると考えられているが、超音波(高周波)帯域での骨、特に複雑な多孔性構造を有する海綿骨の圧電特性は十分に解明されていない。
本研究成果で得られた海綿骨で発生する圧電信号の特性は、既存研究では見られなかった新規性が高いものであり、海綿骨での骨生成メカニズムの解明に有用であると言える。また、in situの海綿骨に近い状態での特性の検討は、超音波照射による関節骨骨折の治癒方法の確立につながるものであると考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Book (2 results)

  • [Journal Article] Effect of ultrasound attenuation on piezoelectric signal generation in cancellous bone2024

    • Author(s)
      Atsushi Hosokawa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 63 Issue: 2 Pages: 02SP86-02SP86

    • DOI

      10.35848/1347-4065/ad1d1d

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison between experimental and numerical results for piezoelectric signals generated in water-saturated cancellous bone by ultrasound irradiation2024

    • Author(s)
      Atsushi Hosokawa
    • Journal Title

      Journal of Physics: Conference Series

      Volume: undecided

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] Simulation of ultrasonically induced electrical potentials in bone2023

    • Author(s)
      Hidehisa Suzuyama, Taisei Tsubata, Shouta Kitajima, Keigo Maehara, Atsushi Hosokawa, Takao Tsuchiya, and Mami Matsukawa
    • Journal Title

      The Journal of the Acoustical Society of America

      Volume: 154 Pages: 1315-1323

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Piezoelectric finite-difference time-domain simulation of piezoelectric signals generated in cancellous bone by ultrasound irradiation2022

    • Author(s)
      Hosokawa Atsushi
    • Journal Title

      Proceedings of Meetings on Acoustics

      Volume: - Pages: 020001-020001

    • DOI

      10.1121/2.0001693

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Pore Fluid on Piezoelectric Signal in Cancellous Bone Generated by Ultrasound Irradiation2021

    • Author(s)
      Hosokawa Atsushi
    • Journal Title

      2021 IEEE UFFC-S Latin America Ultrasonics Symposium (LAUS) proceedings

      Volume: - Pages: 1-4

    • DOI

      10.1109/laus53676.2021.9639095

    • Related Report
      2021 Research-status Report
  • [Presentation] 海綿骨の深い箇所で超音波照射によって発生する圧電信号について2024

    • Author(s)
      細川 篤
    • Organizer
      2024年電子情報通信学会総合大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Numerical simulation of piezoelectric signals in cancellous bone using an finite-difference time-domain method2023

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      forum acusticum 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparison between experimental and numerical results for piezoelectric signals generated in water-saturated cancellous bone by ultrasound irradiation2023

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      2023 International Congress on Ultrasonics (2023 ICU)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Change of piezoelectric signal in cancellous bone with ultrasound attenuation2023

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      Acoustics 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Ultrasound attenuation on piezoelectric signal generation in cancellous bone2023

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      The 44nd Symposium on Ultrasonic Electronics (USE 2023)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超音波によって海綿骨で生じる圧電信号の微細骨梁構造に伴う変化2023

    • Author(s)
      細川 篤
    • Organizer
      2023年電子情報通信学会総合大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Piezoelectric finite-difference time-domain simulation of piezoelectric signals generated in cancellous bone by ultrasound irradiation2022

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      183rd Meeting of the Acoustical Society of America
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Numerical simulation of piezoelectric signals generated in cancellous bone by ultrasound irradiation: Effect of microstructure2022

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      The 43nd Symposium on Ultrasonic Electronics (USE 2022)
    • Related Report
      2022 Research-status Report
  • [Presentation] 超音波によって海綿骨で生じる圧電信号の数値シミュレーション -骨梁構造の影響-2022

    • Author(s)
      細川 篤
    • Organizer
      2022年電子情報通信学会総合大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Effect of Pore Fluid on Piezoelectric Signal in Cancellous Bone Generated by Ultrasound Irradiation2021

    • Author(s)
      Hosokawa Atsushi
    • Organizer
      2021 IEEE UFFC-S Latin America Ultrasonics Symposium (LAUS)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Simulation of Piezoelectric Signal Generated in Cancellous Bone by Ultrasound Irradiation: Effect of Trabecular Orientation2021

    • Author(s)
      Atsushi Hosokawa
    • Organizer
      The 42nd Symposium on UltraSonic Electronics (USE2021)
    • Related Report
      2021 Research-status Report
  • [Book] 生体組織の超音波計測2022

    • Author(s)
      日本音響学会、松川 真美、山口 匡、長谷川 英之、斎藤 繁実、西條 芳文、細川 篤、長谷 芳樹、蜂屋 弘之、神山 直久、吉田 憲司、金井 浩、椎名 毅、山越 芳樹、梅村 晋一郎、工藤 信樹
    • Total Pages
      244
    • Publisher
      コロナ社
    • ISBN
      9784339013436
    • Related Report
      2021 Research-status Report
  • [Book] Bone Quantitative Ultrasound New Horizons2022

    • Author(s)
      Pascal Laugier, Quentin Grimal, Atsushi Hosokawa, Mami Matsukawa, et al.
    • Total Pages
      429
    • Publisher
      Springer Cham
    • ISBN
      9783030919788
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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