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Related Experiment Videos

A microcomputer-based system for coronary artery Doppler studies

R Moraes1, D H Evans, D P DeBono

  • 1Division of Medical Physics, Faculty of Medicine, University of Leicester, UK.

Physiological Measurement
|November 1, 1995
PubMed
Summary

Intra-vascular Doppler catheters provide velocity estimates for coronary circulation research. A developed system captures, processes, and stores Doppler, ECG, and pressure signals for hemodynamic analysis.

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Area of Science:

  • Cardiovascular Research
  • Biomedical Engineering
  • Medical Instrumentation

Background:

  • Intra-vascular Doppler catheters are increasingly utilized in coronary circulation research.
  • These catheters enable velocity estimation from Doppler signals for hemodynamic analysis.

Purpose of the Study:

  • To outline the system requirements for acquiring high-frequency Doppler signals from catheter-tipped transducers.
  • To describe a system designed for capturing, processing, and storing Doppler, ECG, and pressure signals.
  • To discuss software for calculating hemodynamic parameters from stored waveforms.

Main Methods:

  • Development of a system for high-frequency Doppler signal acquisition.
  • Integration of Doppler, ECG, and pressure signal capture and storage.

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  • Implementation of software for waveform analysis and parameter calculation.

    • Main Results:

    • A functional system for acquiring and processing intra-vascular Doppler signals was developed.
    • The system successfully captured and stored Doppler, ECG, and pressure data.
    • Software enabled calculation of derived hemodynamic parameters from acquired signals.

    Conclusions:

    • The described system meets the requirements for high-frequency Doppler signal acquisition in coronary circulation studies.
    • This technology facilitates detailed hemodynamic assessment through the analysis of Doppler, ECG, and pressure data.
    • The system provides valuable outputs for correlating physiological parameters with the hemodynamic situation.