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Noninvasive aortic pressure and flow measurement

M E Etemad1, J M James, D L Ewert

  • 1Dept. Electrical Engineering, College of Engineering and Architecture, North Dakota State University, Fargo 58105, USA.

Biomedical Sciences Instrumentation
|January 1, 1996
PubMed
Summary

This project aims to develop a portable ultrasonic device for noninvasively measuring aortic blood pressure and flow. The system uses an array of ultrasonic crystals focused on the aortic arch for accurate readings.

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Imaging
  • Medical Devices

Background:

  • Noninvasive monitoring of aortic blood pressure and flow is crucial for cardiovascular health assessment.
  • Current methods may be invasive or lack portability, limiting widespread clinical application.

Purpose of the Study:

  • To develop a portable ultrasonic device for noninvasive measurement of aortic blood pressure and flow.
  • To adapt existing ultrasonic hyperthermia technology for precise aortic arch imaging.

Main Methods:

  • Utilizing a linear array of eight transmitting/receiving ultrasonic crystals.
  • Employing computer-controlled beam steering to focus on the aortic arch.
  • Measuring aortic pressure via wall motion analysis and flow via Doppler techniques.
  • Implementing time-delay control for precise focusing of the ultrasound beam.

Main Results:

  • The study discusses the necessary hardware and software for generating delayed ultrasonic excitation signals.
  • The proposed method enables focused ultrasound beam generation for targeted aortic measurements.

Conclusions:

  • A portable ultrasonic device shows promise for noninvasive aortic pressure and flow measurement.
  • Adaptation of hyperthermia array technology is feasible for this application.

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