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Dr. Hans Pasterkamp, MD. FRCPC.
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Acoustic Modeling of Tracheal Sounds |
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| Almost 200 years after its invention the stethoscope remains the most widely used instrument in clinical medicine. There is undisputed diagnostic value in the sounds that are generated by air flow through the trachea and bronchi and transmitted through lung parenchyma and chest wall to the listener's ear. The development of computer based acoustic analyses of respiratory sounds has taken this information beyond the limits of the stethoscope and of human auditory perception. The processing of acoustic signals from the chest surface together with respiratory mechanical signals from air flow velocity offers new possibilities for non-invasive, dynamic imaging of airway configuration and pulmonary ventilation. |