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

Establishment of a new heart failure evaluation method using Vector Flow Mapping

Research Project

Project/Area Number 17K13036
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Medical systems
Research InstitutionOsaka University

Principal Investigator

Masuda Kasumi  大阪大学, 医学系研究科, 助教 (20533293)

Research Collaborator Nakatani Satoshi  大阪大学, 医学系研究科, 教授 (80393221)
Asanuma Toshihiko  大阪大学, 医学系研究科, 招聘教授 (80379271)
Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords超音波 / 左室内血流 / 心不全 / 超音波医学 / 左室内血流ベクトル / 心エコー / 左室内血流動態
Outline of Final Research Achievements

Conventional cardiac assessment has been to evaluate pump function from cardiac morphology, such as the ejection fraction. Since Vector Flow Mapping (VFM) that is recently developed can be used to quantitatively evaluate left ventricular blood flow, cardiac function can be evaluated without depending on cardiac morphology. Pathline Analysis (PA), based on VFM, enables us to trace the virtual blood particles entering to the left ventricular in diastole and being ejected in systole. I calculated the ratio of numbers of entering particles in diastole and ejected particles in systole “ejection rate” before and after cardiac dysfunction using animal experiments. As a result, in the heart failure model, the ejection rate significantly reduced, and most of the blood flow into the left ventricular cavity were not ejected in one cardiac cycle, and the blood flow efficiency in the left ventricle may be decreased.

Academic Significance and Societal Importance of the Research Achievements

人口の高齢化や生活様式の変化に伴い、日本でも虚血性心疾患やそれに伴う心不全が増加している。また高齢者では駆出率の保たれた心不全も増えつつある。VFM指標は従来の形態的指標と異なり心機能を鋭敏に評価でき、心不全発症を早期に診断できる可能性もある。左室腔内の血流を定量的に評価できれば、心不全の病態生理にせまることができるのではないかとも期待される。また、今回の研究で用いる心エコー法はMRIなどよりも装置が小型で、非造影下で簡便に施行できるため、臨床上有用であると思われる。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2018 2017

All Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Book (1 results)

  • [Presentation] Intraventricular Flow Dynamics in Acute Heart Failure Studied by Vector Flow Mapping.2018

    • Author(s)
      Minami S, Masuda K, Stugaard M et al.
    • Organizer
      American Heart Association Scientific Session 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel methods for quantification of left ventricular function.2018

    • Author(s)
      Nakatani S
    • Organizer
      16th Annual CHFR Symposium on Heart Failure
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 循環器領域 渦流イメージング.2018

    • Author(s)
      増田佳純
    • Organizer
      日本超音波医学会第45回関西地方会学術集会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 心不全モデルにおける左室内流跡線解析:Vector Flow Mappingを用いた検討.2018

    • Author(s)
      南 星奈、増田佳純、他
    • Organizer
      第66回日本心臓病学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Characterization of relative pressure profiles in the inflow tract of the normal and ischemic left ventricle. a study by new ultrasonic relative pressure imaging.2017

    • Author(s)
      Marie Stugaard, Toshiki Kamimukai, Kasumi Masuda, et al.
    • Organizer
      ESC 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Noninvasive Assessment of Intraventricular Pressure Difference in Left Ventricular Dyssynchrony Using Vector Flow Mapping.2017

    • Author(s)
      Seina Minami, Kasumi Masuda, et al.
    • Organizer
      AHA 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 渦流イメージング2017

    • Author(s)
      増田 佳純
    • Organizer
      日本超音波医学会第44回関西地方会学術集会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 左室の非同期運動時における左室内圧較差の非侵襲的定量評価: Vector Flow Mappingを用いた検討2017

    • Author(s)
      南 星奈, 増田 佳純 他
    • Organizer
      第28回日本心エコー図学会学術集会
    • Related Report
      2017 Research-status Report
  • [Book] INNERVISION 5月号2017

    • Author(s)
      増田 佳純, 中谷 敏
    • Total Pages
      3
    • Publisher
      (株)インナービジョン
    • ISBN
      9784902131437
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi