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Development and clinical application of a mathematical model to explain thrombogenic dynamics during the healing process of cerebral aneurysms

Research Project

Project/Area Number 18KT0025
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund
Section特設分野
Research Field Complex Systems Disease Theory
Research InstitutionOsaka University

Principal Investigator

Sugiyama Yoshie  大阪大学, 大学院情報科学研究科, 教授 (60308210)

Co-Investigator(Kenkyū-buntansha) 八木 高伸  早稲田大学, 理工学術院, 主任研究員(研究院准教授) (00468852)
中村 匡徳  名古屋工業大学, 工学(系)研究科(研究院), 教授 (20448046)
石井 暁  京都大学, 医学研究科, 特定准教授 (30467469)
青木 友浩  国立研究開発法人国立循環器病研究センター, 研究所, 室長 (40633144)
Project Period (FY) 2018-07-18 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2019: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2018: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
KeywordsNavier-Stokes方程式 / 数値流体力学解析 / 脳動脈瘤 / ステント留置術 / 血栓過程 / 数理モデル / 走化性方程式系 / 血栓形成の数理モデル / 動物モデル / 血栓化ダイナミクス / CFD解析 / 留置シミュレータ / ステント留置 / 血栓形成シミュレータ / 数理モデリング / 数値流体力学
Outline of Final Research Achievements

We explored the process of thrombus formation in cerebral aneurysms. More specifically, we focused on the initial thrombus formation in cerebral aneurysms, and used computational fluid dynamics (CFD) analysis as the main method to elucidate the phenomenon of thrombus formation in cerebral aneurysms.
The vascular structure of cerebral aneurysms undergoes periodic movements due to the beating of the heart. In this study, we considered the vascular structure as a moving boundary and focused on the precise reproduction of the cyclic rotation of blood flow. By clarifying the effects of this motion, we succeeded in simulating the actual phenomena in high agreement with them.

Academic Significance and Societal Importance of the Research Achievements

【社会的意義】高齢化の進む本邦では、脳動脈瘤の保有率は上昇傾向にある。そこで、脳動脈瘤の治療法として主流である”ステント留置術”をシミュレーション対象とした。同手術は、やり直しの利かない外科的手術であることから、精緻なシミュレーション手法の開発は喫緊の重要な課題である。
【学術的意義】Navier-Stokes方程式の移動境界値問題の適切性問題という数学問題を解決することで、シミュレーションの安定性が担保される。本研究では、関数解析的手法によって同数学問題を解決することで、「ステント留置による脳動脈瘤の運動様態への影響」を詳らかにしつつ、安定的にシミュレーションを実行できるプロトコルを開発した。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (21 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 4 results,  Invited: 10 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] Imperial College London(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Laboratoire J.-L. Lions(フランス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Yonsei University(韓国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Hemodynamic and Histopathological Changes in the Early Phase of the Development of an Intracranial Aneurysm2020

    • Author(s)
      KATAOKA Hiroharu、YAGI Takanobu、IKEDO Taichi、IMAI Hirohiko、KAWAMURA Koichi、YOSHIDA Kazumichi、NAKAMURA Masanori、AOKI Tomohiro、MIYAMOTO Susumu
    • Journal Title

      Neurologia medico-chirurgica

      Volume: 60 Issue: 7 Pages: 319-328

    • DOI

      10.2176/nmc.st.2020-0072

    • NAID

      130007873264

    • ISSN
      0470-8105, 1349-8029
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 脳動脈瘤のメカノバイオロジー2020

    • Author(s)
      青木友浩、清水寛平、山本希美子
    • Journal Title

      実験医学増刊「疾患に挑むメカノバイオロジー」; 循環器、運動器、がん、再生・発生に生体内の力はどうかかわるのか

      Volume: 38 Pages: 1096-1104

    • Related Report
      2020 Research-status Report
  • [Journal Article] Time global existence and finite time blow-up criterion for solutions to the Keller-Segel system coupled with the Navier-Stokes fluid2019

    • Author(s)
      Kozono, Hideo; Miura, Masanari; Sugiyama, Yoshie .
    • Journal Title

      J. Differential Equations

      Volume: 267

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Compactly supported stationary states of the degenerate Keller-Segel system in the diffusion-dominated regime2019

    • Author(s)
      J. A. Carrillo and Y. Sugiyama
    • Journal Title

      Indiana University Mathematics Journal

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Time global existence and finite time blow-up criterion for solutions to the Keller-Segel system coupled with the Navier-Stokes fluid, J. Differential Equations2019

    • Author(s)
      H. Kozono, M. Miura and Y. Sugiyama
    • Journal Title

      J. Differential Equations

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 血管壁リモデリングに基づく脳動脈瘤成長シミュレーション -血管壁の材料力学的異方性の考慮-2021

    • Author(s)
      田中 勇輝,山田 智裕,氏原 嘉洋,杉田 修啓,中村 匡徳
    • Organizer
      日本機械学会東海支部 第52 回学生員卒業研究発表講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 脳動脈瘤病態におけるメカノトランスダクション機構の役割2020

    • Author(s)
      青木友浩
    • Organizer
      第61回日本脈管学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 脳動脈瘤治癒過程における血栓化ダイナミクスを説明する数理モデルの構築2018

    • Author(s)
      杉山由恵
    • Organizer
      CREST・さきがけ・AIMaP合同シンポジウム「数学パワーが世界を変える2019」
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] On the ε-regularity theorem for the Keller-Segel systems and its application to the analysis of singular sets2018

    • Author(s)
      杉山由恵
    • Organizer
      京都大学NLPDEセミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Measure valued solutions of 2D Keller-Segel systems2018

    • Author(s)
      杉山由恵
    • Organizer
      The 16th Linear and Nonlinear Waves
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Measure valued solutions of 2D Keller-Segel systems2018

    • Author(s)
      杉山由恵
    • Organizer
      RIMS 研究集会 「反応拡散方程式‐伝播現象と特異性の解析および諸科科学への応用」
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Compactly supported stationary states of the degenerate Keller-Segel systemin the difusion-dominated regime2018

    • Author(s)
      杉山由恵
    • Organizer
      2018年度偏微分方程式 集中セミナープログラム
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] On the Structure of Solutions of Keller-Segel Systems with Sinks of Fluid2018

    • Author(s)
      杉山由恵
    • Organizer
      AIMS 2018, SS10
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Compactly supported stationary states of the degenerate Keller-Segel systemin the difusion-dominated regime2018

    • Author(s)
      杉山由恵
    • Organizer
      AIMS 2018, SS127
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 退化型Keller-Segel系の解構造について2018

    • Author(s)
      杉山由恵
    • Organizer
      大阪大学数学科談話会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] On the structure of solutions of Keller-Segel systems with fluid and its application to life science2018

    • Author(s)
      杉山由恵
    • Organizer
      大阪大学 微分方程式セミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Compactly supported stationary states of the degenerate Keller-Segel systemin the difusion-dominated regime2018

    • Author(s)
      杉山由恵
    • Organizer
      南大阪応用数学セミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] 血管壁厚み推定方法、血管壁厚み 推定装置及び血管壁厚み推定システム2019

    • Inventor(s)
      杉山由恵
    • Industrial Property Rights Holder
      杉山由恵
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-142321
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2018-07-20   Modified: 2024-01-30  

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