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Flow estimation using ultrasound imaging (color M-mode) and computer postprocessing.

R Juul1, S A Slørdahl, H Torp

  • 1Department of Biomedical Engineering, University of Trondheim, Norway.

Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism
|September 1, 1991
PubMed
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This study introduces a new method for noninvasively calculating blood flow using color M-mode and computer analysis. The technique accurately estimates cerebral blood flow in major arteries, offering a valuable tool for brain circulation assessment.

Area of Science:

  • Cardiovascular Physiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Accurate noninvasive blood flow measurement is crucial for diagnosing vascular conditions.
  • Existing methods may have limitations in precision or accessibility.

Purpose of the Study:

  • To develop and validate a novel method for noninvasive blood flow calculation.
  • To assess the accuracy of this method in a cardiovascular model and in human subjects.

Main Methods:

  • Utilized color Motion-mode (M-mode) ultrasound and advanced computer postprocessing.
  • Calculated velocity fields by correcting for angle and assuming symmetrical flow.
  • Integrated velocity data over the cardiac cycle for volume flow estimation.

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Main Results:

  • Achieved a 0.99 correlation (p<0.001) between estimated and measured flow in a hydromechanical model.
  • Demonstrated a 0.91 correlation (p<0.01) between common carotid artery flow and the sum of internal and external carotid artery flow in humans.
  • Showed consistent repeated measurements in healthy individuals.

Conclusions:

  • The developed system provides accurate noninvasive estimation of blood flow.
  • This method holds significant potential for assessing brain blood supply noninvasively.