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Development of a high-precision and high-speed simulation method for respiratory airflow

Research Project

Project/Area Number 20K11852
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 60100:Computational science-related
Research InstitutionYamaguchi University

Principal Investigator

Chen Xian  山口大学, 大学院創成科学研究科, 教授 (70313012)

Co-Investigator(Kenkyū-buntansha) 平野 綱彦  山口大学, 医学部附属病院, 准教授 (00382333)
Jiang Fei  山口大学, 大学院創成科学研究科, 准教授 (60734358)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords呼吸シミュレーション / 生体力学 / 流体構造連成解析 / 有限要素法 / 格子ボルツマン法 / GPGPU / 呼吸系 / 気流 / シミュレーション
Outline of Research at the Start

本研究では、① 高速気管支流体構造連成解析;② 肺実質微細構造気流解析;③ 高精度マルチスケール気流解析の課題を解決することにより、高精度かつ高速な呼吸系気流シミュレーション手法の開発を行う。さらに既開発の胸郭・肺変形シミュレーションと統合することにより呼吸系生体力学シミュレーションを実現し、これにより呼吸系疾患における呼吸障害の病因特定や治療効果予測が可能となり、個々人の呼吸系疾患の診断と治療(個別化医療)を支援する強力な手段を提供できる。

Outline of Final Research Achievements

We developed a high-precision virtual structure method for coupling bronchial deformation analysis using the finite element method and bronchial airflow analysis using the lattice Boltzmann method. This method is suitable for parallel calculation, and high calculation efficiency was achieved by parallel implementation on a GPGPU. For the construction of bronchial model, we proposed an automatic detection algorithm and developed a a high-speed method for constructing voxel mesh. Furthermore, we performed fluid-structure interaction analysis for the bronchi, airflow analysis inside the bronchioles, and airflow analysis inside a porous medium for the fine structure of the lung parenchyma, and developed a high-precision multi-scale airflow analysis method. We also analyzed the relationship between the results of patient specific morphological analysis of the diaphragmand respiratory physiological data, and established an approach to develop an index for evaluating respiratory function.

Academic Significance and Societal Importance of the Research Achievements

並列計算により臨床上実用的高速気管支流体構造連成解析、細気管支・肺胞の階層性・区画性を反映した肺実質微細構造気流解析、3D気管支流体構造連成解析・0D肺実質微細構造気流解析・1D気管支気流解析を連結するマルチスケール気流解析を実現することにより、これまでの枠組みを超えた呼吸系気流シミュレーション手法が生まれ、さらに胸郭・肺変形シミュレーション手法と統合することにより、呼吸過程における生体力学現象を解明できる呼吸系生体力学シミュレーションシステムを構築でき、個々人の呼吸系疾患の診断と治療(個別化医療)を支援する強力な手段の創出につながり、呼吸器疾患の診断と治療における革新をもたらす可能性がある。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (13 results)

All 2024 2023 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Multi-scale simulations of pulmonary airflow based on a coupled 3D-1D-0D model2024

    • Author(s)
      Jiang Fei、Hirano Tsunahiko、Liang Chenyang、Zhang Guangzhi、Matsunaga Kazuto、Chen Xian
    • Journal Title

      Computers in Biology and Medicine

      Volume: 171 Pages: 108150-108150

    • DOI

      10.1016/j.compbiomed.2024.108150

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Postoperative Prediction of Pulmonary Resection Based on MCA Model by?Integrating the Temporal Responses and Biomechanical Functions2022

    • Author(s)
      Jiang Fei、Chen Xian、Ueda Kazuhiro、Ohgi Junji
    • Journal Title

      Multidisciplinary Computational Anatomy

      Volume: 1 Pages: 201-206

    • DOI

      10.1007/978-981-16-4325-5_26

    • ISBN
      9789811643248, 9789811643255
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A GPU-accelerated fluid structure-interaction solver developed by coupling finite element and lattice Boltzmann methods2021

    • Author(s)
      Jiang Fei、Matsumura Kazuki、Ohgi Junji、Chen Xian
    • Journal Title

      Computer Physics Communications

      Volume: 259 Pages: 107661-107661

    • DOI

      10.1016/j.cpc.2020.107661

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A voxel image‐based pulmonary airflow simulation method with an automatic detection algorithm for airway outlets2020

    • Author(s)
      Jiang Fei、Hirano Tsunahiko、Ohgi Junji、Chen Xian
    • Journal Title

      International Journal for Numerical Methods in Biomedical Engineering

      Volume: 36 Issue: 3 Pages: 1-16

    • DOI

      10.1002/cnm.3305

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simulation of Fluid-Structure Interaction Problems with Thin Elastic Plate via the Coupling of Finite Element and Lattice Boltzmann Methods2020

    • Author(s)
      Jiang Fei、Liao Kangping、Matsumura Kazuki、Ohgi Junji、Chen Xian
    • Journal Title

      International Journal of Computational Methods

      Volume: 17 Issue: 10 Pages: 2050013-2050013

    • DOI

      10.1142/s0219876220500139

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Computational analysis of respiratory dynamics with fibrosis pathology using a combined 3D-1D-0D multiscale framework2023

    • Author(s)
      Fei Jiang, Tsunahiko Hirano, Kazuto Matsunaga, Xian Chen
    • Organizer
      Ninth International Conference on Mechanics of Biomaterials and Tissues
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Correlation between Respiratory Function Indicators and Flow Parameters from Bronchial Airflow Analysis2022

    • Author(s)
      Fei Jiang, Xian Chen, Yusuke Sakai, Tsunahiko Hirano, Keiko Doi, Xianghong Li, Kazuto Matsunaga
    • Organizer
      the 9th World Congress of Biomechanics
    • Related Report
      2022 Research-status Report
  • [Presentation] Multi-scale Simulations of Pulmonary Airflow based on a Coupled 3D-1D-0D Model2022

    • Author(s)
      Fei Jiang, Xian Chen and Tsunahiko Hirano
    • Organizer
      15th World Congress on Computational Mechanics
    • Related Report
      2022 Research-status Report
  • [Presentation] 気管支気流解析による肺機能と流体力学的指標の相関性に関する研究2022

    • Author(s)
      酒井 佑輔, 平野 綱彦, 蒋 飛, 陳 献, 土居 恵子, 李 相紅, 大木 順司, 松永 和人
    • Organizer
      日本機械学会 中国四国支部 第60期総会・講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 肺変形と気管支気流の連成解析によるCOPDが呼吸機能に及ぼす影響の検討2022

    • Author(s)
      田原 航希, 平野 綱彦, 蒋 飛, 陳 献, 土居 恵子, 李 相紅, 大木 順司, 松永 和人
    • Organizer
      日本機械学会 中国四国支部 第60期総会・講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Dynamic analysis of diaphragm in respiratory diseases2021

    • Author(s)
      Chenyang LIANG, Fei JIANG, Xian CHEN, Junji OHGI, Tsunahiko HIRANO, Keiko DOI, Kazuto MATSUNAGA
    • Organizer
      The 11th Asian-Pacific Conference on Biomechanics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 3D-1D-0D マルチスケール肺気流解析手法の構築2021

    • Author(s)
      蒋 飛, 陳 献,平野 綱彦,松永和人,土居恵子,大木 順司
    • Organizer
      日本機械学会 2021年度年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 気管支のCTボクセル画像に基づく気流解析の自動化2020

    • Author(s)
      蒋 飛, 陳 献, 平野 綱彦, 松永 和人, 大木 順司
    • Organizer
      日本機械学会年次大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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