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Development of an Equipment for Automatic Evaluation of Cardiovascular Dynamics : Using Echocardiography

Research Project

Project/Area Number 04557115
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 医学一般
Research InstitutionOsaka University

Principal Investigator

TAKEDA Hiroshi  OSAKA UNIVERSITY,OSAKA UNIVERSITY HOSPITAL,ASSOICIATE PROFESSOR, 医学部・付属病院, 助教授 (20127252)

Co-Investigator(Kenkyū-buntansha) MASUYAMA Tohru  OSAKA UNIVERSITY,OSAKA UNIVERSITY HOSPITAL,FELLOW, 医学部・付属病院, 医員
TANOUCHI Jun  OSAKA UNIVERSITY,MEDICAL SCHOOL,ASSISTANT, 医学部, 助手 (20197544)
INOUE Michitoshi  OSAKA UNIVERSITY,OSAKA UNIVERSITY HOSPITAL,PROFESSOR, 医学部・付属病院, 教授 (30028401)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥9,100,000 (Direct Cost: ¥9,100,000)
Fiscal Year 1993: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1992: ¥7,100,000 (Direct Cost: ¥7,100,000)
KeywordsECHOCARDIOGRAPHY / AUTOMATIC MEASUREMENT / IMAGE PROCESSING / テクスチャー・トラッキング
Research Abstract

Automatic measurement has been expected in clinical fields for more objective clinical evaluation. We attempt to apply an image processing technique to automatic measurement of left ventricular wall motion on echocardiotomography. This approach may allow us objective evaluation of regional left ventricular function without any cardiovascular experts. In this study, we examined ideal accuracy of automated measuring method on echocardiotomograms and evaluated accuracy in clinical use.
The basic approach of automated evaluation in left ventricular function was measurement of shortening in systole between two points on left ventricular wall. We set multiple ROIs on an initial image of left ventricular wall in echocardiography. A texture tracking procedure based on cross correlation of image texture automatically traced ROIs on following tomograms. Thus, we could calculate fractionals hortening from changes of distance between ROIs. In an ideal condition, the mean accuracy of ROI tracing was 0.4mm that was same as special resolution of tomogram. Although, 23% error was observed for clinical images. We introduced pre-processing procedure to improve error fraction. This procedure reduced the error to 5%.
These results suggested that automated measurement of left ventricular function would be applied in clinical field.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Kazuhiro Yamamoto: "Effects of heart rate on left ventricular filling dynamics" Cardiovascular Research. 27. 935-941 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 近藤寛也: "等容拡張時間におよぼす拡張期Asynchronyの影響" 超音波医学. 20. 443-444 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Takeda: "Development of a totally integrated hospital information system" MEDINFO. 92. 241-246 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Kondo: "Delayed sdgmental relaxation of the left ventricle in patients with ischemic heart disease without dyskinesea detected by digital subtraction echocardiography" Circulation. 86. I-194 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kazuhiro Yamamoto: "Effects of heart rate on left ventricular filling dynamics" Cardiovasc Res. 27. 935-941 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hiroya Kondo: "The effects of diastolic asynchrony on isovolumic ventricular relaxation time assessed with digital subtraction" Jpn J Med Ultrasonics. 20. 443-444 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Takeda: "Development of a totally integrated hospital information system" MEDINFO. 92. 241-246 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Kondo: "Delayd sdgmental relaxation of the left ventricle in patients with ischemic heart disease without dyskinesea detected by digital subtraction echocardiography" Circulation. 86. I-194 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 近藤 寛也: "労作性狭心症例における冠動脈障害領域の左室局所弛緩遅延" 超音波医学. 21(掲載予定). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kazuhiro Yamamoto: "Effects of heart rate on left ventricular filling dynamics" Cardiovascular Research. 27. 935-941 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 近藤 寛也: "等容拡張時間におよぼす拡張期Asynchronyの影響" 超音波医学. 20. 443-444 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 武田 裕: "超音波心筋組織性状診断法" 学術月報. 46. 281 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 武田 裕: "診療における情報の流れと病院情報システム" 新医療. 12. 148-151 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 黒田 知純: "医用画像管理システムに対する診療料の考え方ーPACS導入に向けての院内予備調査ー" 映像情報MEDICAL. 24. 335-341 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 近藤 寛也: "テクスチャー・トラッキングによる局所心筋収縮性の評価" 医用電子と生体工学.

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Takeda: "Development of a totally integrated hospital information system:An intelligent hospital in Osaka university" MEDINFO 92. 241-246 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Kondo: "Delayed segmental relaxation of the left ventricle in patients with ischemic heart disease without dyskinesea detected by digital subtraction echocardiography" Circulation. 86. I-194 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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