Acoustic imaging

Details Acoustic imaging Acoustic imaging

1996-12-18

1998-05-05

Javorski, Franois

Surgery

Diagnostic testing

Respiratory

A61B 800

Patent

active

057466998

ABSTRACT:
Single hand supportable and operable apparatus for providing an output signal characteristic of the morphology of a respiratory tract includes an acoustic pipe for exchanging acoustical energy with the tract. The pipe has an open first end in communication with an opening in the respiratory tract. A transducer, such as a loudspeaker, is coupled to the pipe for launching acoustical energy into the pipe, producing an incident wave towards the opening in the tract and a reflected wave to form a transient wave field in the pipe representative of the morphology of the tract. Preferably, first and second pressure wave sensing transducers, such as microphones, mounted along the length of the pipe in spaced relationship provide first and second transduced signals representative of the transient wave field. A processor processes the first and second transduced signals to provide an output signal characteristic of the morphology of the tract, such as the cross-sectional area as a function of the distance from the opening in the tract.

REFERENCES:
patent: 3713434 (1973-01-01), Leslie, Jr.
patent: 3747597 (1973-07-01), Olivera
patent: 4031569 (1977-06-01), Jacob
patent: 4660555 (1987-04-01), Payton
patent: 5024220 (1991-06-01), Holmgreen et al.

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