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Related Experiment Videos

Gated first pass radionuclide ventriculography. Methods, validation, and applications.

D A Morrison, J Turgeon, J Kotler

    Clinical Nuclear Medicine
    |September 1, 1984
    PubMed
    Summary

    Electrocardiographic gating offers a new way to measure ventricular ejection fraction using first pass radionuclide ventriculography. This method shows excellent reproducibility and good correlation with other techniques for assessing heart function.

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    Area of Science:

    • Nuclear Cardiology
    • Cardiovascular Imaging
    • Radionuclide Angiography

    Background:

    • First pass radionuclide ventriculography is a method for assessing cardiac function.
    • Electrocardiographic gating can improve the accuracy of first pass radionuclide ventriculography.

    Purpose of the Study:

    • To detail the acquisition and analysis methods for electrocardiographically gated first pass radionuclide ventriculography.
    • To provide validation and reproducibility data for this technique.
    • To describe its applications in assessing ventricular function.

    Main Methods:

    • Acquisition of first pass radionuclide ventriculograms using electrocardiographic gating.
    • Count-based analysis of ventricular ejection fractions.
    • Validation against gated blood pool ventriculography and contrast angiography.

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  • Assessment of intra- and inter-observer reproducibility.

    • Main Results:

    • Left ventricular ejection fraction (LVEF) by gated first pass correlated well with gated blood pool ventriculography (r=0.95) but less so with contrast angiography (r=0.72).
    • Right ventricular ejection fraction (RVEF) by gated first pass compared favorably with gated blood pool ventriculography (r=0.93).
    • Excellent reproducibility was observed for both RVEF (r=0.99) and LVEF (r=0.88-0.98) across observers and sessions.

    Conclusions:

    • Electrocardiographic gating is a valid and reproducible method for first pass radionuclide ventriculography.
    • This technique provides accurate measurements of LVEF and RVEF, comparable to established methods.
    • The right anterior oblique view offers optimal chamber separation for assessing global and segmental ventricular function.