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High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart
11:50

High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart

Published on: July 9, 2010

Morphological evaluation of a regurgitant orifice by 3-D echocardiography: applications in the quantification of

A S Anayiotos1, B K Smith, M Kolda

  • 1School of Engineering, University of Alabama at Birmingham, 35294-4460, USA. aanayiot@eng.uab.edu

Ultrasound in Medicine & Biology
|May 13, 1999
PubMed

Insights

Accurately assessing heart valve regurgitation is challenging. This study introduces a novel method using 3-D echocardiography and Doppler velocimetry for precise blood flow calculation, improving clinical evaluation.

Area of Science:

  • Cardiovascular Imaging
  • Medical Engineering
  • Hemodynamics

Background:

  • Clinical evaluation of blood flow regurgitation through heart valves remains a significant challenge.
  • Existing methods lack accuracy due to insufficient geometric information of the regurgitant orifice.

Purpose of the Study:

  • To develop and validate a superior method for calculating regurgitant variables using 3-D echocardiography and Doppler velocimetry.
  • To address the limitations in assessing heart valve function and stenosis.

Main Methods:

  • Utilized three-dimensional (3-D) echocardiography to construct the geometric structure of a regurgitating porcine prosthetic valve orifice.
  • Employed color Doppler flow mapping (CD) and continuous-wave Doppler (CW) to assess the velocity flowfield.
  • Developed two calculation methods: peak regurgitant flow rate from CD and regurgitant flow volume from CW.

Main Results:

  • Both developed calculation methods demonstrated excellent correlation with true values obtained from an electromagnetic flowmeter.
  • The 3-D echocardiography approach successfully provided detailed geometric information of the valve orifice.
  • Preliminary results in a realistic porcine model showed high accuracy.

Conclusions:

  • The combined use of 3-D echocardiography and Doppler velocimetry offers a superior and accurate method for calculating regurgitant variables.
  • This technique holds promise for establishing a routine clinical procedure for evaluating heart valve regurgitation and stenosis.
  • Further clinical testing is warranted to validate these findings in human patients.

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