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Related Experiment Videos

Quantification of aortic regurgitation using Doppler imaging.

H Raffoul1, B Diebold, J P Guglielmi

  • 1Unité INSERM 256, Hopital Broussais, Paris, France.

International Journal of Cardiac Imaging
|January 1, 1987
PubMed
Summary

M mode Doppler imaging accurately quantifies aortic regurgitation severity by measuring the regurgitant jet diameter at its origin. This method provides a reliable assessment of aortic insufficiency, correlating closely with angiographic grading.

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Echocardiography

Background:

  • Aortic insufficiency causes a jet in the left ventricular outflow tract.
  • Jet cross-sectional area at origin determines regurgitation severity.
  • M mode Doppler imaging can measure jet diameter.

Purpose of the Study:

  • Evaluate M mode Doppler imaging for quantifying aortic regurgitation.
  • Assess the relationship between jet diameter and regurgitation severity.

Main Methods:

  • Imaged left ventricular outflow tract in 32 patients using multigate pulsed Doppler or color flow mapping.
  • Compared jet diameter measurements to a 4-grade supravalvular aortography semiquantification.

Main Results:

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  • Adequate imaging obtained in all 32 patients.
  • A clear jet image was obtained in 28 patients.
  • Found a close relationship between jet diameter (jd) and angiographic grade (ag): jd = 2.4 + 6.1 ag, r = 0.88.
  • Significant differences noted between grades 0/1 and 1/2.

    • Conclusions:

    • Direct M mode measurement of the regurgitant jet at its origin quantifies aortic insufficiency.
    • This method offers an additional approach to assess leak severity.