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Development of color mapping technique of stress distribution in unstable coronary plaque with intravascular ultrasound

Research Project

Project/Area Number 14570666
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Circulatory organs internal medicine
Research InstitutionYamaguchi University

Principal Investigator

HIRO Takafumi  Yamaguchi University, University Hospital, Assistant Professor, 医学部附属病院, 助手 (10294638)

Co-Investigator(Kenkyū-buntansha) FUJII Takashi  Yamaguchi University, School of Medicine, Associate professor, 医学部, 助教授 (60228947)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2003: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2002: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsIntravascular Ultrasound / Coronary Artary / Unstable Plaque / Stress / Plaque rupture / Acute coronary syndrome / 動脈硬化 / プラーク / 線維性被膜
Research Abstract

There may be several kinds of approach using intravascular ultrasound (NUS) to detect a vulnerable plaque. One of the approaches is to show a plaque portion having a concentration of excessive stress, which may initiate the plaque rupture. Various color coded IVUS imaging methods have been proposed to discriminate fibrous and fatty plaques using radiofrequency (RF) NUS signals. We recently developed a way of colorized representation of equivalent stress distribution within a plaque by a finite element analysis, which was superimposed on the regular longitudinal NUS images.' It has been shown by this method that the location of excessive stress concentration is determined by fibrous cap thickness, distribution of lipid rich area and calcified area, and that the value of stress at the surface of fibrous cap can be easily modified by the adjacent tissue properties. This suggests that all the plaques with the same fibrous cap thickness do not always provide the same vulnerability. Furthermore, we are now trying to develop a new colorized 3D mapping technique using regular NUS images to show the distribution of shear stress within a plaque surface, which may represent an endothelial modification before the rupture of plaque

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Takafumi Hiro: "Assessment and prediction of coronary atherosclerotic plaque rupture by longitudinal intravascular ultrasound imaging and computer-simulated color mapping of plaque stress distribution (abstract)"Circulation jounal. 67. 29-29 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Koji Imoto: "Longitudinal assessment of atherosclerotic plaque rupture with computer-simulated color-mapping of plaque stress distribution and intravascular ultrasound imaging (abstract)"Circulation jounal. 67. 290-291 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Takafumi Hiro: "Imaging vulnerable atherosclerotic plaque : The evolving of new imaging technique : intravascular ultrasound (abstract)"Circulation jounal. 68. 33-33 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Koji Imoto: "Effect of fibrous cap thinning on plaque vulnerability : A longitudinal intravascular ultrasound study with computer-simulated color mapping"Circulation jounal. 68. 91-91 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Takafumi Hiro: "Assessment and prediction of coronary atherosclerotic plaque rupture by longitudinal intravascular ultrasound imaging and computer-simulated color mapping of plaque stress distribution (abstract)"Circulation journal. 67. 29 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Koji Imoto: "Longitudinal assessment of atherosclerotic plaque rupture with computer-simulated color-mapping of plaque stress distribution and intravascular ultrasound imaging (abstract)"Circulation journal. 67. 290 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Takafumi Hiro: "Imaging vulnerable atherosclerotic plaque : The evolving of new imaging technique : intravascular ultrasound (abstract)"Circulation journal. 68. 33 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Koji Imoto: "Effect of fibrous cap thinning on plaque vulnerability : A longitudinal intravascular ultrasound study with computer simulated color mapping of stress distribution (abstract)"Circulation journal. 68. 91 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 廣 高史: "Assessment and prediction of coronary atherosclerotic plaque rupture by longitudinal intravascular ultrasound imaging and competer-simulated color mapping of plaque stress distribution"Circulation Journal. 67巻Suppl 1. 29-29 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 廣 高史: "Imaging vulnerable atherosclerotic plaque : The evolving of new imaging technique - intravascular ultrasound"Circulation Journal. 68巻Suppl 1. 33-33 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Takafumi Hiro: "Assessment and prediction of coronary atherosclerotic plaque rupture by longitudinal intravascular ultrasound imaging and computer-simulated color mapping of plaque stress distribution (abstract)"Circulation journal. 67・Suppl1. 29-29 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Koji Imoto: "Longitudinal assessment of atherosclerotic plaqu rupture with computer-simulated color-mapping of plaque stress distribution and intravascular ultrasound imaging (abstract)"Circulation Journal. 67・Suppl1. 290-291 (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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