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Blood flow measurement: future applications and prospects

R F Rushmer

    Medical Instrumentation
    |May 1, 1977
    PubMed
    Summary

    Noninvasive blood flow measurements using ultrasonic Doppler and laser-Doppler technologies offer valuable insights into ventricular performance and superficial vessel dynamics. These techniques provide dynamic properties like peak velocity and acceleration for enhanced cardiovascular assessment.

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    Area of Science:

    • Cardiovascular Physiology
    • Biomedical Engineering
    • Medical Imaging

    Background:

    • Evaluating human ventricular performance requires assessing dynamic properties such as peak velocity, acceleration, and power development.
    • Noninvasive techniques are crucial for accessible and frequent patient monitoring.
    • Advancements in sensor technology are key to improving diagnostic capabilities.

    Purpose of the Study:

    • To highlight the potential of noninvasive blood flow measurements for evaluating ventricular performance.
    • To introduce transcutaneous ultrasonic Doppler flow sensors as a method for assessing dynamic blood flow properties.
    • To explore the emerging applications of laser-Doppler technology for superficial vessel analysis.

    Main Methods:

    • Utilizing transcutaneous ultrasonic Doppler flow sensors for noninvasive blood flow velocity and acceleration measurements.
    • Employing laser-Doppler technology for contactless measurement of blood flow in superficial tissues.
    • Analyzing dynamic parameters including peak velocity, acceleration, and instantaneous power development.

    Main Results:

    • Transcutaneous ultrasonic Doppler sensors offer a simple, noninvasive approach to obtaining critical hemodynamic data.
    • Laser-Doppler technology shows promise for blood flow assessment in superficial vessels like skin and retina without physical contact.
    • These methods facilitate the evaluation of ventricular performance through dynamic blood flow characteristics.

    Conclusions:

    • Noninvasive blood flow measurement techniques, particularly ultrasonic Doppler and laser-Doppler, are valuable tools in cardiovascular assessment.
    • These technologies provide accessible and dynamic insights into both cardiac function and peripheral circulation.
    • Future developments in noninvasive sensing hold significant potential for clinical diagnostics and research.

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