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Related Experiment Videos

Right ventricular volume determination in isolated human hearts.

R Erbel, H A Richter, W Krebs

    Journal of Clinical Ultrasound : JCU
    |February 1, 1986
    PubMed
    Summary

    A new subtraction method accurately determines right ventricular volume using 2D echocardiography. This novel approach offers improved accuracy and reduced random error compared to existing methods.

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    Area of Science:

    • Cardiology
    • Medical Imaging
    • Echocardiography

    Background:

    • Accurate right ventricular (RV) volume assessment is crucial for diagnosing and managing cardiac conditions.
    • Traditional methods for RV volume determination have limitations in accuracy and precision.

    Purpose of the Study:

    • To develop and validate a novel subtraction method for determining right ventricular volume using apical two-dimensional echocardiography.
    • To compare the accuracy of the subtraction method against established techniques like the pyramid method and Simpson's rule.

    Main Methods:

    • A new subtraction method was developed, calculating RV volume by subtracting left ventricular and septal volumes from total heart volume.
    • The method was validated using isolated human hearts with both two-dimensional echocardiography and radiography.

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  • Correlation coefficients and percentage differences were analyzed to assess accuracy and systematic error.

    • Main Results:

    • The subtraction method demonstrated the highest correlation with RV filling volume in both echocardiographic (0.964) and radiographic (0.946) procedures.
    • It showed significantly lower random error (10.5-13.9%) compared to the pyramid and Simpson's rule methods.
    • A slight underestimation (-7.4%) was observed with echocardiography, but not with radiography.

    Conclusions:

    • The subtraction method is a suitable and accurate technique for right ventricular volume determination via apical two-dimensional echocardiography.
    • This novel method surpasses the accuracy of the pyramid method and Simpson's rule, offering a valuable tool for clinical practice.