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Automated computer program for radionuclide cardiac output determination.

F M Fouad, T Houser, W J MacIntyre

    Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
    |December 1, 1979
    PubMed
    Summary
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    This study introduces an automated computer program for analyzing radionuclide data to measure cardiac output. The automated method offers objective region selection, faster results, and reduced radionuclide dosage, correlating well with manual and dye-dilution techniques.

    Area of Science:

    • Nuclear medicine
    • Cardiovascular physiology
    • Medical imaging analysis

    Background:

    • Radionuclide imaging is a safe and minimally invasive method for cardiac output determination.
    • Manual analysis of radionuclide data can be subjective and time-consuming.
    • Accurate and efficient cardiac output measurement is crucial for diagnosing and managing cardiovascular conditions.

    Purpose of the Study:

    • To describe a completely automated computer program for analyzing radionuclide data to determine cardiac output.
    • To validate the accuracy of the automated method by comparing it with manual analysis and dye-dilution techniques.
    • To assess the benefits of automation, including objectivity, speed, and reduced radionuclide dosage.

    Main Methods:

    • Development of a fully automated computer program for cardiac output calculation from radionuclide data.

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  • Comparison of computer-derived cardiac output values with manually determined values for right and left ventricular regions of interest.
  • Validation of the automated method against simultaneous cardiac output measurements using indocyanine green dye-dilution technique.

    • Main Results:

    • Automated cardiac output values showed high correlation with manual determinations (r = 0.90 for RV, r = 0.98 for LV, p < 0.001).
    • Computer-selected regions (LV or whole heart) correlated significantly with dye-dilution measurements (r = 0.86, p < 0.001).
    • The automated approach enhanced objectivity, accelerated result turnaround, and permitted a lower radionuclide dose.

    Conclusions:

    • A fully automated computer program provides a reliable and objective method for cardiac output determination using radionuclides.
    • This automated technique offers significant advantages over manual analysis, including improved efficiency and reduced radiation exposure.
    • The validated automated system is suitable for routine clinical use in cardiovascular assessment.