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A simple method for calculating left ventricular functions from angiographic data using a programmable hand

J H Vogel, R D Swenson, V Elings

    Catheterization and Cardiovascular Diagnosis
    |January 1, 1976
    PubMed
    Summary
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    Programmable hand calculators now enable rapid, inexpensive calculation of ventricular performance indicators like end diastolic volume and systolic ejection fraction. This method simplifies cardiac catheterization data analysis for routine clinical use.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Biomedical Engineering

    Background:

    • Ventricular performance indicators, including end diastolic volume and systolic ejection fraction, are crucial for cardiac assessment.
    • Traditional calculation methods are time-consuming and require specialized computer facilities, limiting routine use in cardiac catheterization.

    Purpose of the Study:

    • To introduce a practical, cost-effective method for calculating ventricular volumes and ejection fraction using programmable hand calculators.
    • To provide detailed programming instructions and data entry protocols for routine clinical application.

    Main Methods:

    • Development and implementation of programmable hand calculator algorithms for ventricular volume analysis.
    • Application of the method to both single-plane and biplane cineangiographic data.

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  • Step-by-step programming procedures and data input guidelines provided.

    • Main Results:

    • Demonstrated the feasibility of rapid and efficient analysis of ventricular volume data using programmable hand calculators.
    • Enabled accurate calculation of end diastolic volume and systolic ejection fraction.
    • Facilitated the integration of these key performance indicators into routine cardiac catheterization.

    Conclusions:

    • Programmable hand calculators offer an accessible and economical solution for calculating critical ventricular performance metrics.
    • This approach overcomes previous limitations, making ventricular volume analysis a routine component of cardiac catheterization procedures.