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

High signal intensity on diffusion weighted images reflects acute phase of deep vein thrombus

Research Project

Project/Area Number 20K08085
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionUniversity of Miyazaki

Principal Investigator

Kuroiwa Yasuyoshi  宮崎大学, 医学部, 研究員 (20747232)

Co-Investigator(Kenkyū-buntansha) 山下 篤  宮崎大学, 医学部, 教授 (90372797)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords深部静脈血栓症 / 拡散強調画像 / 赤血球 / 核磁気共鳴画像 / 病理学 / 深部静脈血栓 / MRI / 静脈血栓塞栓症 / みかけの拡散係数
Outline of Research at the Start

この研究では、静脈血栓塞栓症の臨床画像、静脈血栓のモデル動物、血液の体外MRI画像を用いて、症例やモデル動物の静脈血栓の拡散強調画像所見とADC値、ADC値を反映する血栓成分、及び血球成分・血液凝固とADC値の関連を解析し、より危険な深部静脈血栓や抗凝固薬の効果予測となる拡散強調画像所見とADC値を明らかにすることを目的としています。これが明らかになると深部静脈血栓症の中で「塞栓リスクの高い血栓」、「治療効果が見込める血栓」を検出する画像診断法としての展開が期待でき、静脈血栓塞栓症の予防・治療戦略に重要な情報を提供しうる意義のある研究と考えています。

Outline of Final Research Achievements

Venous thromboembolism (VTE) is a severe condition where thrombi in the lower extremities or pelvic region obstruct the pulmonary artery. It often presents without symptoms, and the risk of bleeding associated with anticoagulant therapy has become a concern. Recent studies have reported a method for visualizing thrombi by combining diffusion-weighted imaging (DWI) and T1-weighted imaging in MRI. In this study, clinical images, animal models, and blood MRI were employed to elucidate the relationship between DWI features and diffusion coefficients. DWI clearly depicted thrombi and captured changes in signal intensity and apparent diffusion coefficient (ADC) values over time. The presence of erythrocyte components suggesting diffusion restriction within the thrombus was also indicated. Consequently, DWI in MRI holds promise as a qualitative imaging diagnostic tool for the diagnosis and treatment of deep vein thrombosis.

Academic Significance and Societal Importance of the Research Achievements

新たな研究では、静脈血栓塞栓症の診断と治療に役立つ画像診断法が開発されました。この病気は、下肢や骨盤内の血栓が肺動脈を詰まらせる重篤な状態で、多くの患者は症状がないままです。しかし、抗凝固薬の使用による出血リスクが懸念されています。最新の研究では、MRIの画像技術を使用して、血栓を視覚化する方法が報告されました。臨床画像やモデル動物、血液を用いて、画像の特徴と血栓の性質の関係を明らかにしました。これにより、血栓の正確な描写や時間の経過に伴う変化を捉えることができます。この研究結果により、MRIの画像診断法が静脈血栓塞栓症の早期発見や適切な治療に貢献することが期待されます。

Report

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

    (5 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (2 results) (of which Invited: 1 results)

  • [Journal Article] MRI diffusion-weighted imaging detects a fresh portal vein thrombus as a high intensity lesion in a patient with a liver transplant: A case report2021

    • Author(s)
      Kuroiwa Yasuyoshi、Kusumoto Kazunori、Shimata Keita、Yamashita Atsushi、Hibi Taizo、Asada Yujiro、Imamura Takuroh
    • Journal Title

      Acta Radiologica Open

      Volume: 10 Issue: 12 Pages: 1-4

    • DOI

      10.1177/20584601211069557

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] High signal intensity on diffusion-weighted images reflects acute phase of deep vein thrombus.2020

    • Author(s)
      Gi T, Kuroiwa Y, Yamashita A, Mizutani Y, Asanuma T, Miyati T, Maekawa K, Aman M, Imamura T, Asada Y. Gi T, Kuroiwa Y, Yamashita A, Mizutani Y, Asanuma T, Miyati T, Maekawa K, Aman M, Imamura T, Asada Y.
    • Journal Title

      Thromb Haemost.

      Volume: 120 Issue: 10 Pages: 1463-1473

    • DOI

      10.1055/s-0040-1714280

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Signal change of jugular vein thrombus on diffusion-weighted magnetic resonance imaging.2020

    • Author(s)
      Kuga N, Kuroiwa Y, Sakamoto T, Yamashita A, Gi T, Doi Shogo, Kinoshita T, Tanaka T, Kihara Y, Asada Y, Imamura T.
    • Journal Title

      Circ Rep.

      Volume: 2 Issue: 8 Pages: 455-456

    • DOI

      10.1253/circrep.cr-20-0039

    • NAID

      130007885741

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 心血管病の次世代診断・治療法(シンポジウム)2022

    • Author(s)
      黒岩 靖淳
    • Organizer
      第54回日本動脈硬化学会総会.
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 生体肝移植後の胆管炎に合併した門脈血栓症の1例:MRI拡散強調画像による検出と質的評価.2021

    • Author(s)
      黒岩靖淳,楠元寿典,嶋田圭太,山下 篤,土肥省吾,田中 隆, 木原 康,日比泰造, 浅田祐士郎,今村 卓郎
    • Organizer
      第43回日本血栓止血学会学術集会.
    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi