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Type 2 Endoleaks after Endovascular Aortic Aneurysm Repair: Hemodynamic Evaluation Using 4D-Flow MRI and Development of Prediction Models for Treatment Optimization

Research Project

Project/Area Number 22K08917
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 InstitutionNagoya University

Principal Investigator

Sugimoto Masayuki  名古屋大学, 医学部附属病院, 講師 (00447814)

Co-Investigator(Kenkyū-buntansha) 児玉 章朗  愛知医科大学, 医学部, 教授 (10528748)
竹原 康雄  名古屋大学, 医学系研究科, 特任教授 (70188217)
坂野 比呂志  名古屋大学, 医学系研究科, 教授 (80584721)
川井 陽平  名古屋大学, 医学部附属病院, 医員 (80802347)
池田 脩太  名古屋大学, 医学部附属病院, 助教 (90836503)
兵藤 良太  名古屋大学, 医学系研究科, 特任講師 (80831388)
秋田 直宏  名古屋大学, 医学部附属病院, 病院講師 (20772247)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2024: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsEVAR / type 2 endoleak / 4D flow MR / 瘤縮小 / 血流動態 / 腹部大動脈瘤 / ステントグラフト / エンドリーク / 4D-flow MR
Outline of Research at the Start

腹部大動脈ステントグラフト留置術(EVAR)後の「type 2 endoleak」( T2EL)は高頻度の合併症であるが治療方針のエビデンスは乏しい。4D-flow MRは血行動態という「動的」要因を非侵襲的に評価可能である。本研究はEVAR患者を対象とし、1)4D-flow MRでT2ELによる瘤内圧変化や血液流入といった「動的」因子を定量化するとともに、2)EVAR後の中~長期成績(瘤径、T2EL、再治療)を観察する。データ解析によってT2ELの病態解明とT2EL治療の最適化と長期予後改善を目指す。

Outline of Final Research Achievements

This research focused on the diagnosis and management of type 2 endoleaks following endovascular aortic aneurysm repair (EVAR). Using 4D-flow MRI technology, we analyzed blood flow dynamics that conventional contrast CT imaging cannot capture.
Our findings revealed factors associated with early and late spontaneous sac shrinkage, the relationship between perioperative hypogastric artery embolization and type 2 endoleaks, correlation between D-dimer levels and sac diameter changes, effects of stent grafts on renal arterial flow dynamics, increased local energy loss after EVAR, and the impact of significant sac shrinkage on endograft tortuosity at 5 years post-EVAR. These insights enable better prediction and differentiation between cases requiring reintervention and those suitable for observation alone, allowing for treatment optimization and contributing to improved long-term outcomes of EVAR procedures.

Academic Significance and Societal Importance of the Research Achievements

本研究は、大動脈瘤に対するステントグラフト治療後の合併症である「endoleak」の新たな診断法を確立する学術的意義を持つ。従来のCT検査では捉えられない血液の流れの詳細を、最新の4D-flow MRI技術によって可視化・定量化することに成功した。
この研究成果により、再治療が必要な症例と経過観察のみで良い症例を正確に判別できるようになり、不必要な追加治療を避けつつ、本当に治療が必要な患者には適切な介入が可能となる。これは患者の身体的・経済的負担軽減と医療資源の効率的活用につながり、ステントグラフト治療の長期成績改善という社会的課題解決に寄与するものである。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (21 results)

All 2025 2024 2023 2022 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (9 results) (of which Int'l Joint Research: 2 results) Remarks (6 results)

  • [Journal Article] Impact of Significant Sac Shrinkage on Endograft Tortuosity at 5 Years Post-EVAR: A Retrospective Analysis.2025

    • Author(s)
      Sugimoto M, Osawa T, Lee C, Ikeda S, Kawai Y, Niimi K, Banno H.
    • Journal Title

      Ann Vasc Surg.

      Volume: 110 Pages: 10-16

    • DOI

      10.1016/j.avsg.2024.08.033

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The immediate post-operative impact of infrarenal aortic endografts on renal arterial flow dynamics: Insights from four-dimensional flow magnetic resonance imaging analysis.2024

    • Author(s)
      Sugimoto M, Horiguchi R, Ikeda S, Kawai Y, Niimi K, Hyodo R, Banno H.
    • Journal Title

      Vascular.

      Volume: 23 Issue: 5 Pages: 1049-1057

    • DOI

      10.1177/17085381241277651

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The association between the D-dimer level at 1 year after EVAR and sac diameter change in patients with persistent type 2 endoleak.2023

    • Author(s)
      T Sugimoto M, Sato T, Ikeda S, Kawai Y, Niimi K, Banno H.
    • Journal Title

      Journal of Endovascular Therapy.

      Volume: 25 Issue: 2 Pages: 1-8

    • DOI

      10.1177/15266028231170165

    • Related Report
      2024 Annual Research Report 2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The association between the D-dimer level at 1 year after EVAR and sac diameter change in patients with persistent type 2 endoleak2023

    • Author(s)
      Sugimoto M, Sato T, Ikeda S, Kawai Y, Niimi K, Banno H
    • Journal Title

      J Endovasc Ther

      Volume: -

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Aneurysmal Repair Increase in Local Energy Loss for Fusiform Abdominal Aortic Aneurysm: Assessments With 4D flow MRI.2022

    • Author(s)
      Horiguchi Ryota、Takehara Yasuo、Sugiyama Masataka、Hyodo Ryota、Komada Tomohiro、Matsushima Masaya、Naganawa Shinji、Mizuno Takashi、Sakurai Yasuo、Sugimoto Masayuki、Banno Hiroshi、Komori Kimihiro、Itatani Keiichi
    • Journal Title

      Journal of Magnetic Resonance Imaging

      Volume: 57 Issue: 4 Pages: 1199-1211

    • DOI

      10.1002/jmri.28359

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Factors Associated With Spontaneous Sac Shrinkage in Patients With Persistent Type 2 Endoleaks After EVAR2022

    • Author(s)
      Sugimoto Masayuki、Banno Hiroshi、Sato Tomohiro、Ikeda Shuta、Tsuruoka Takuya、Kawai Yohei、Niimi Kiyoaki、Kodama Akio、Komori Kimihiro
    • Journal Title

      Journal of Endovascular Therapy

      Volume: - Issue: 4 Pages: 1-9

    • DOI

      10.1177/15266028221083457

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] The Immediate Postoperative Impact of Infrarenal Aortic Endografts on Renal Arterial Flow Dynamics: Insights from 4D Flow MRI Analysis2024

    • Author(s)
      Sugimoto M, Horiguchi R, Hyodo R, Ikeda S, Kawai Y, Niimi K, Banno H.
    • Organizer
      ESVS 38th Annual Meeting
    • Related Report
      2024 Annual Research Report
  • [Presentation] The Association between Significant Sac Shrinkage and Endograft Tortuosity at 5 Years Post-EVAR: A Retrospective Analysis2024

    • Author(s)
      Sugimoto M, Osawa T, Lee C, Ikeda S, Kawai Y, Niimi K, Banno H.
    • Organizer
      ESVS 38th Annual Meeting
    • Related Report
      2024 Annual Research Report
  • [Presentation] The association between D-dimer level after EVAR and aneurysm expansion in patients with persistent type 2 endoleak2023

    • Author(s)
      Sugimoto Masayuki, Li Changi, Ikeda Shuta, Kawai Youhei, Niimi Kiyoaki, Banno Hiroshi.
    • Organizer
      24th Congress of Asian Society for Vascular Surgery
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 当院における遠隔成績を見据えた腹部大動脈瘤治療戦略2023

    • Author(s)
      佐藤誠洋、池田脩太、川井陽平、杉本昌之、新美清章、坂野比呂志
    • Organizer
      第123回日本外科学会定期学術集会
    • Related Report
      2023 Research-status Report
  • [Presentation] EVAR後瘤径拡大とIMA塞栓術及び腰動脈開存の関連についての検討2023

    • Author(s)
      池田脩太、李昌史、川井陽平、杉本昌之、新美清章、坂野比呂志
    • Organizer
      第64回日本脈管学会学術総会
    • Related Report
      2023 Research-status Report
  • [Presentation] AAA治療選択基準の将来2022

    • Author(s)
      杉本昌之、池田脩太、川井陽平、鶴岡琢也、新美清章、児玉章朗、坂野比呂志、古森公浩
    • Organizer
      第62回日本脈管学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 持続性type 2 endoleak患者における瘤収縮に関連する因子の検討2022

    • Author(s)
      杉本昌之、佐藤誠洋、池田脩太、川井陽平、鶴岡琢也、新美清章、児玉章朗、坂野比呂志、古森公浩
    • Organizer
      第52回日本心臓血管外科学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 当科における EVAR 遠隔期追加治療の検討2022

    • Author(s)
      杉本昌之、佐藤誠洋、池田脩太、川井陽平、鶴岡琢也、新美清章、児玉章朗、坂野比呂志、古森公浩
    • Organizer
      第50回日本血管外科学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] THE ASSOCIATION BETWEEN D-DIMER LEVEL AT 1 YEAR AFTER EVAR AND SAC DIAMETRE CHANGE IN PATIENTS WITH PERSISTENT TYPE 2 ENDOLEAK2022

    • Author(s)
      Sugimoto Masayuki, Hiroshi Banno, Yohei kawai, kiyoaki Niimi, Akio Kodama, Kimihiro Komori
    • Organizer
      ESVS 36th Annual Meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] 名古屋大学血管外科

    • URL

      https://vascsurg.jp/

    • Related Report
      2024 Annual Research Report
  • [Remarks] 名古屋大学大学院医学系研究科・医学部医学科 血管外科(外科学第一)

    • URL

      https://www.med.nagoya-u.ac.jp/hospital/departments/vascular-s/

    • Related Report
      2024 Annual Research Report
  • [Remarks] 名古屋大学血管外科

    • URL

      http://www.vasucular.jp/

    • Related Report
      2023 Research-status Report
  • [Remarks] 名古屋大学大学院医学系研究科・医学部医学科 血管外科(外科学第一)

    • URL

      http://www.med.nagoya-u.ac.jp/hospital/depaertments/vascular-s/

    • Related Report
      2023 Research-status Report
  • [Remarks] 名古屋大学血管外科

    • URL

      http://www.vascsurg.jp/

    • Related Report
      2022 Research-status Report
  • [Remarks] 名古屋大学大学院医学系研究科・医学部医学科血管外科(外科学第一)

    • URL

      https://www.med.nagoya-u.ac.jp/hospital/departments/vascular-s/

    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2026-01-16  

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