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Development of prognosis prediction AI program after endovascular aortic repair

Research Project

Project/Area Number 19K09245
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionOsaka University

Principal Investigator

Shimamura Kazuo  大阪大学, 医学系研究科, 准教授 (10507205)

Co-Investigator(Kenkyū-buntansha) 政田 健太  大阪大学, 医学部附属病院, 特任助教 (60770584)
金 啓和  大阪大学, 医学系研究科, 特任研究員 (70532985)
倉谷 徹  大阪大学, 医学系研究科, 特任教授 (90448035)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords大動脈解離 / AI / 大動脈弾性率 / ステントグラフト / TEVAR / 血管内治療 / 人工知能
Outline of Research at the Start

大動脈解離に対するステントグラフトを用いたエントリー閉鎖術(TEVAR)の有効治療率(偽腔血栓化・退縮達成率)は約50-80%に止まり、TEAVR後の偽腔残存血流が治療効果に負の影響を与えることが知られている。本研究では、人工知能(AI)を用いることにより術前患者情報や使用デバイス・留置方法からTEVAR後の偽腔血栓化・退縮達成率を予測し、適切な術式決定を効率的に行えるシステムを開発することを目的としている。さらに、TEVARによる有効治療が得難いと予想される症例に対する追加治療による効率的な偽腔血流コントロール法を確立し、AI技術を用いた新たなる大動脈解離に対する治療システムの構築をめざす。

Outline of Final Research Achievements

In this research, AI based program which predicts the thrombosis/shrinkage of the false lumen in late phase after primary entry closure by TEVAR in aortic dissection was developed. Preoperative, operative and postoperative parameters which related to the fate of false lumen was determined by traditional statistically method, and comprehensive aortic dissection database was build.
Elastic modulus was involved in the AI program as a key factor for prediction of false lumen status. A program to calculate the elastic modulus of the ascending aorta using ECG-gated CT scan in vivo was developed, and it was validated ex-vivo by examining the aortic samples with tensile test. Histological examination was also performed.

Academic Significance and Societal Importance of the Research Achievements

本研究により大動脈解離に対するTEVARの遠隔期有効性(=偽腔退縮性)を予見するプログラムを構築する基盤が構築されたと考えられる。大動脈解離に対する治療はリスクが高くかつ高額であることから、治療前に遠隔期有効性を予見することで治療成績の向上および医療費削減に大きく貢献することが期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Towards a Clinical Implementation of Measuring the Elastic Modulus of the Aorta From Cardiac Computed Tomography Images2021

    • Author(s)
      Takashi Shirakawa;Toru Kuratani;Masao Yoshitatsu;Kazuo Shimamura;Shinya Fukui;Akira Kurata;Yasushi Koyama;Koichi Toda;Ikuo Fukuda;Yoshiki Sawa
    • Journal Title

      IEEE Transactions on Biomedical Engineering

      Volume: 68 Issue: 12 Pages: 3543-3553

    • DOI

      10.1109/tbme.2021.3077362

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Determining the Optimal Proximal Landing Zone for TEVAR in the Aortic Arch: Comparing the Occurrence of the Bird-Beak Phenomenon in Zone 0 vs Zones 1 and 22020

    • Author(s)
      Kudo Tomoaki、Kuratani Toru、Shimamura Kazuo、Sawa Yoshiki
    • Journal Title

      Journal of Endovascular Therapy

      Volume: 27(3) Issue: 3 Pages: 368-376

    • DOI

      10.1177/1526602820914269

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] The double-barrel endografting technique in a patient with chronic type B aortic dissection.2019

    • Author(s)
      Masada K, Kuratani T, Shimamura K, Sawa Y
    • Journal Title

      Semin Thoracic Cardiovasc Sugr

      Volume: 55(6) Pages: 183-186

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effectiveness of embolic protection filter device in stroke prevention during endovascular aortic arch repair in significant aortic atheroma patients.2019

    • Author(s)
      Shimamura K, Kuratani T, Kin K, Shijo T, Masada K, Sawa Y
    • Journal Title

      Interact Cardiovasc Thorac Surg

      Volume: 28(6) Pages: 974-980

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Strategy for type B aortic dissection using TAG Conformable stent graft2022

    • Author(s)
      Kazuo Shimamura
    • Organizer
      Asian Society for Cardiovascular and Thoracic Surgery
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of the predictor of aortic shrinkage after thoracic endovascular aortic repair for patent false lumen chronic aortic dissection2022

    • Author(s)
      Takayuki Shijo, Kazuo Shimamura
    • Organizer
      Aortic Symposium 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 遠隔期成績からみたzone 0 Hybrid TEVARの有効性2021

    • Author(s)
      島村 和男、倉谷 徹、四條 崇之
    • Organizer
      第64回関西胸部外科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 弓部大動脈疾患に対する治療戦略2021

    • Author(s)
      島村 和男、倉谷 徹、四條 崇之
    • Organizer
      Japan Endovascular Symposium
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Long-term results of hybrid/endovascular repair in patients with Marfan Syndrome2020

    • Author(s)
      Kazuo Shimamura, Toru Kuratani, Keiwa Kin, Kenta Masada, Toru Ide, Takasumi Goto, Koichi Toda, Takayoshi Ueno, Yoshiki Sawa
    • Organizer
      第84回 日本循環器学会学術集会 プレナリーセッション
    • Related Report
      2020 Research-status Report
  • [Presentation] Evaluation of long term effectiveness of TEVAR for acute type B aortic dissection2019

    • Author(s)
      島村 和男、倉谷 徹、金 啓和、四條 崇之、政田 健太、井手 亨、戸田 宏一、澤 芳樹
    • Organizer
      第119回 日本外科学会定期学術集会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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