• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Applicaton of Cardiac 4D Flow MRI for Prediction of Cardiogenic Cerebral Infarction

Research Project

Project/Area Number 19K17545
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53020:Cardiology-related
Research InstitutionNational Cardiovascular Center Research Institute

Principal Investigator

Inoue Yuko  国立研究開発法人国立循環器病研究センター, 病院, 医長 (20769898)

Project Period (FY) 2019-04-01 – 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 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords心房細動 / 脳梗塞 / MRI 4D flow / 左心房 / 心原性脳梗塞 / 4D flow / 心臓MRI
Outline of Research at the Start

脳梗塞の中でも最も多い心原性脳塞栓症は、他の脳血管の動脈硬化に由来する脳梗塞よりも重篤であることが知られており、脳梗塞の発症を予測し、予防することが重要な課題である。心原性脳塞栓症の発症機序は、従来は心房細動のリズム自体による心内血栓形成が原因と考えられてきたが、申請者らは心房細動のリズムそのものよりも心臓MRIで評価した左心房の機能不全が重要であることを報告した。本研究では、近年開発された心臓MRI 4D flow動画解析にて心原性脳塞栓症に特徴的な左心房内血流パターンや左心耳血流の洗い流し率を解析することにより脳梗塞発症予測の精度を向上させること、発症機序に基づいた脳梗塞予防を提唱することを目的とする。

Outline of Final Research Achievements

In a prospective single-center observational study, 20 patients (mean age 74 years) with a history of paroxysmal atrial fibrillation underwent cardiac MRI. Atrial and ventricular function and 4D-flow movies on cardiac MRI were analyzed. Patients were divided into 10 with cardiogenic cerebral infarctio (CI) and 10 without CI according to the presence or absence of history of CI.
Patients with CI had higher CHADS-VASc scores (2.3 vs. 1.6) and lower left atrial blood flow velocity on transesophageal echocardiography (52 vs. 65 cm/sec) compared to those without OCI (left atrium: 35.6 vs. 43.7; left atrium: 32.4 vs. 43.8 cm/sec).
Cardiac MRI 4D flow analysis showed reduced left atrial perfusion in patients with paroxysmal AF and previous cerebral infarction. It is expected that the number of patients will be increased in the future to further clarify the relationship between cerebral infarction and atrial function using cardiac MRI.

Academic Significance and Societal Importance of the Research Achievements

左心房および左心耳の血流低下が発作性心房細動および脳梗塞に関連していることを明確にすることで、これらの疾患の病態生理の理解につながると考えられた。また、血流低下が脳梗塞のリスク要因であることを証明できれば、心臓MRI 4D flow解析を用いて、発作性心房細動患者の脳梗塞リスクをより正確に評価できる可能性がある。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Remarks (1 results)

  • [Int'l Joint Research] Johns Hopkins University(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Complications Associated With Catheter Ablation in Patients With Atrial Fibrillation: A Report From the JROAD-DPC Study2021

    • Author(s)
      Yasuhiro Yokoyama, Koji Miyamoto, Michikazu Nakai, Yoko Sumita, Nobuhiko Ueda, Kenzaburo Nakajima, Tsukasa Kamakura, Mitsuru Wada, Kenichiro Yamagata, Kohei Ishibashi, Yuko Inoue, Satoshi Nagase, Takashi Noda, Takeshi Aiba, Yoshihiro Miyamoto, Satoshi Yasuda, Kengo Kusano
    • Journal Title

      J Am Heart Assoc

      Volume: 11 Issue: 11

    • DOI

      10.1161/jaha.120.019701

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relationship between electrical gaps after Maze procedure and atrial tachyarrhythmias and ablation outcomes after cardiac surgery and concomitant Maze procedure2021

    • Author(s)
      Suzuki K, Miyamoto K, Ueda N, Nakajima K, Kamakura T, Wada M, Yamagata K, Ishibashi K, Inoue Y, Noda T, Nagase S, Aiba T, Yambe T, Kakuta T, Tadokoro N, Fukushima S, Fujita T, Kusano K.
    • Journal Title

      Heart Vessels.

      Volume: 36 Issue: 5 Pages: 675-685

    • DOI

      10.1007/s00380-020-01737-3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Efficacy and safety of new-generation atrial antitachycardia pacing for atrial tachyarrhythmias in patients implanted with cardiac resynchronization therapy devices2020

    • Author(s)
      Ueda Nobuhiko、Kamakura Tsukasa、Noda Takashi、Nakajima Kenzaburo、Kataoka Naoya、Wada Mitsuru、Yamagata Kenichiro、Ishibashi Kohei、Inoue Yuko、Miyamoto Koji、Nagase Satoshi、Aiba Takeshi、Izumi Chisato、Noguchi Teruo、Yasuda Satoshi、Kusano Kengo
    • Journal Title

      Journal of Cardiology

      Volume: 75 Issue: 5 Pages: 559-566

    • DOI

      10.1016/j.jjcc.2019.10.001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Feasibility of late gadolinium enhancement magnetic resonance imaging to detect ablation lesion gaps in patients undergoing cryoballoon ablation of paroxysmal atrial fibrillation2019

    • Author(s)
      Mishima Tsuyoshi、Miyamoto Koji、Morita Yoshiaki、Kamakura Tsukasa、Nakajima Kenzaburo、Yamagata Kenichiro、Wada Mitsuru、Ishibashi Kouhei、Inoue Yuko、Nagase Satoshi、Noda Takashi、Aiba Takeshi、Izumi Chisato、Noguchi Teruo、Yasuda Satoshi、Kusano Kengo
    • Journal Title

      Journal of Arrhythmia

      Volume: 35 Issue: 2 Pages: 190-196

    • DOI

      10.1002/joa3.12161

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Remarks] 生体医工学ウェブ辞典

    • URL

      https://cyclopedia.jsmbe.org/%E3%83%9A%E3%83%BC%E3%82%B9%E3%83%A1%E3%83%BC%E3%82%AB%E3%83%BC

    • Related Report
      2022 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi