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Development of computational biomechanics of the gastrointestinal system

Research Project

Project/Area Number 17H02075
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biomaterial science and engineering
Research InstitutionKobe University (2018-2020)
Tohoku University (2017)

Principal Investigator

Imai Yohsuke  神戸大学, 工学研究科, 教授 (60431524)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2018: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords消化器系バイオメカニクス / 計算バイオメカニクス / 計算力学 / 生体シミュレーション / 医工学
Outline of Final Research Achievements

We developed a numerical model of gastric flow using computational fluid dynamics, medical imaging, and electrophysiology. We showed that impaired coordination between antral contraction and pyloric closure can result in delayed gastric emptying and bile reflux. We also found that slow wave velocity changed with interstitial cells of Cajal loss and aging, resulting in changes in emptying rate.

Academic Significance and Societal Importance of the Research Achievements

潰瘍や癌がないにも関わらず胃痛や胸やけを訴える疾患を「機能性ディスペプシア」と呼び,消化管運動障害がその原因と考えられている.しかしながら,胃内部の食物流動を観察することは困難であり,消化管運動と食物流動の関係は十分明らかでない.本研究では,胃内部で生じる食物流動のコンピュータシミュレーション(数値流体力学解析)を実現した.

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (23 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 2 results,  Invited: 6 results) Book (2 results) Remarks (1 results)

  • [Int'l Joint Research] オークランド大学(ニュージーランド)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] オークランド大学(ニュージーランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] オークランド大学(ニュージーランド)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] オークランド大学(ニュージーランド)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] The influence of interstitial cells of Cajal loss and aging on slow wave conduction velocity in the human stomach2020

    • Author(s)
      Wang Tim Hsu‐Han、Angeli Timothy R.、Ishida Shunichi、Du Peng、Gharibans Armen、Paskaranandavadivel Niranchan、Imai Yohsuke、Miyagawa Taimei、Abell Thomas L.、Farrugia Gianrico、Cheng Leo K.、O’Grady Gregory
    • Journal Title

      Physiological Reports

      Volume: 8 Issue: 24

    • DOI

      10.14814/phy2.14659

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantification of gastric emptying caused by impaired coordination of pyloric closure with antral contraction: a simulation study2019

    • Author(s)
      Ishida S, Miyagawa T, O'Grady G, Cheng LK, Imai Y
    • Journal Title

      J Roy Soc Interface

      Volume: 16 Issue: 157 Pages: 20190266-20190266

    • DOI

      10.1098/rsif.2019.0266

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Shear viscosity of bimodal capsule suspensions in simple shear flow2019

    • Author(s)
      H. Ito, D. Matsunaga, Y. Imai
    • Journal Title

      Physics of Fluids

      Volume: 4 Issue: 11 Pages: 113601-113601

    • DOI

      10.1103/physrevfluids.4.113601

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A computational fluid dynamics simulation of liquid swallowing by impaired pharyngeal motion: bolus pathway and pharyngeal residue2019

    • Author(s)
      Ohta Jun、Ishida Shunichi、Kawase Tetsuaki、Katori Yukio、Imai Yohsuke
    • Journal Title

      American Journal of Physiology-Gastrointestinal and Liver Physiology

      Volume: 317 Issue: 6 Pages: G784-G792

    • DOI

      10.1152/ajpgi.00082.2019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Computation of complex physiological flows2019

    • Author(s)
      Imai Y
    • Organizer
      Osaka University MEI-Center Summer School 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 体の中の複雑な流れを計算する2018

    • Author(s)
      今井陽介
    • Organizer
      第90回バイオメクフォーラム(豊中市)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 体の中の流れを計算する2018

    • Author(s)
      今井陽介
    • Organizer
      第14回東北大学REDEEMシンポジウム(東京都)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 胃の中の流れを計算する2018

    • Author(s)
      今井陽介
    • Organizer
      第50回生物機械システム研究会(豊中市)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Relationship between gastric wall motility and mixing of liquid foods in the stomach2018

    • Author(s)
      Miyagawa, T., Ishida, S., O’Grady, G., Cheng, L., and Imai, Y.
    • Organizer
      8th World Congress on Biomechanics, Dublin, Ireland
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 胃の撹拌・排出の計算力学解析2018

    • Author(s)
      石田駿一,宮川泰明,Gregory O’Grady, Leo K. Cheng, 今井陽介
    • Organizer
      第31回計算力学講演会(徳島市)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 実形状モデルを用いた胃内流動の数値計算2018

    • Author(s)
      石田駿一,宮川泰明,Gregory O’Grady, Leo K. Cheng, 今井陽介
    • Organizer
      第32回数値流体力学シンポジウム(東京都)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 胃内容物の撹拌・排出の数値シミュレーション2018

    • Author(s)
      石田駿一,宮川泰明,Gregory O’Grady, Leo K. Cheng, 今井陽介
    • Organizer
      第31回バイオエンジニアリング講演会(郡山市)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 胃から十二指腸への食物排出の数値計算2017

    • Author(s)
      今井陽介,石田駿一,宮川泰明,O'Grady Gregory,Cheng Leo K.
    • Organizer
      第22回計算工学講演会(さいたま市)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 細胞の流動・接着や消化器系流れの数値流体力学2017

    • Author(s)
      今井陽介
    • Organizer
      産業技術総合研究所 計算バイオメカニクスに関する研究交流会(つくば市)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 胃における蠕動運動と流れの関係についての一考察2017

    • Author(s)
      宮川泰明,石田駿一,O'Grady Gregory, Cheng Leo K., 今井陽介
    • Organizer
      日本機械学会第30回計算力学講演会(東大阪市)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 生体内の流れを計算する2017

    • Author(s)
      今井陽介
    • Organizer
      秋田県立大学特別講義(由利本荘市)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Book] Integrated Nano-Biomechanics2018

    • Author(s)
      Yamaguchi, T., Ishikawa, T., and Imai, Y. Editors
    • Total Pages
      314
    • Publisher
      Elsevier
    • Related Report
      2018 Annual Research Report
  • [Book] Frontiers in Computational Fluid-Structure Interaction and Simulation2018

    • Author(s)
      Tezduyar, T. Editor
    • Total Pages
      480
    • Publisher
      Springer
    • Related Report
      2018 Annual Research Report
  • [Remarks] Advanced Fluid Engineering Lab

    • URL

      http://www.lab.kobe-u.ac.jp/eng-afe/index.html

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2022-01-27  

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