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RESEARCH PAPERS

Airway Area by Acoustic Reflection: The Two-Microphone Method

[+] Author and Article Information
B. Louis, J. Fredberg

Harvard School of Public Health, Department of Environmental Health, Boston, MA 02115

G. Glass, B. Kresen

The Biomechanics Institute, Boston, MA 02215

J Biomech Eng 115(3), 278-285 (Aug 01, 1993) (8 pages) doi:10.1115/1.2895487 History: Received November 14, 1991; Revised August 13, 1992; Online March 17, 2008

Abstract

This report deals with noninvasive imaging of airway geometry based upon information contained in acoustic reflections measured at the mouth. Here we describe a new theoretical approach that enables development of a new miniaturized apparatus. Unlike the single-transducer systems used currently, this new strategy is based upon a two-transducer system that is a variant of that suggested originally by Shroeder (1967). We have developed, implemented, and tested computational algorithms necessary to reconstruct airway dimensions from acoustic reflection data using this two-transducer strategy.

Copyright © 1993 by The American Society of Mechanical Engineers
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