Airway Dimensions in the Human Determined by Non-invasive Acoustic Imaging

Study Draft to Bruno Louis at INSERM U.292, 1997

Authors: B. Louis, P. Drinker, G. M. Glass, D. Isabey and J. J. Fredberg

Conclusion: “The acoustic reflection method is a powerful tool to study the physiopathological properties of the upper airways. It permits, at the bedside and in the clinical situation, an accurate non-invasive and reproducible measurement of the upper airway area. The short duration of the measurement (@ 5ms), in comparison with the breathing period, also allows the estimation of dynamic properties as well as the static properties of airway in physiological conditions. Such a tool should be useful to a better understanding of the structure and function of the upper airway in health as well
as in disease. The method is robust and easy to use. Using the acoustic reflection method as a routine in intensive care units can be now envisaged.”

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