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Three-dimensional echocardiography. In vivo validation for left ventricular volume and function

S C Siu1, J M Rivera, J L Guerrero

  • 1Cardiac Unit, Massachusetts General Hospital, Boston 02114.

Circulation
|October 1, 1993
PubMed
Summary

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Three-dimensional echocardiography accurately measures left ventricular volume and systolic function, overcoming limitations of traditional two-dimensional methods. This novel system provides precise calculations without geometric assumptions, enhancing diagnostic capabilities.

Area of Science:

  • Cardiovascular Imaging
  • Medical Technology
  • Echocardiography

Background:

  • Traditional two-dimensional echocardiography relies on standardized planes and geometric assumptions for left ventricular volume assessment.
  • These assumptions may lead to inaccuracies in ventricles with distorted shapes.
  • Three-dimensional echocardiography offers a solution by quantifying left ventricular volume without these geometric constraints.

Purpose of the Study:

  • To develop and validate a novel three-dimensional echocardiography system for accurate left ventricular volume and function assessment.
  • To evaluate the system's performance in both a canine model and human subjects.

Main Methods:

  • A three-dimensional echocardiography system was developed to integrate 2D images and positions in real-time.

Related Experiment Videos

  • Left ventricular volume was calculated directly from endocardial contours, bypassing geometric assumptions.
  • Validation involved a canine model with direct volume measurement and studies in 19 adult human subjects.

    • Main Results:

    • In canines, 3D echocardiography showed excellent correlation (r=.98) and agreement with direct left ventricular volume measurements.
    • In humans, 3D echocardiography correlated well (r=.94) with Doppler-derived stroke volumes.
    • Calculated ejection fraction also demonstrated high correlation (r=.96) with directly measured values.

    Conclusions:

    • Three-dimensional echocardiography provides an accurate method for assessing left ventricular volume and systolic function.
    • This technology overcomes the limitations of conventional 2D echocardiography, particularly in cases of ventricular distortion.