A mathematical model for the ultrasonic measurement of respiratory flow

Medical & Biological Engineering & Computing - Tập 12 - Trang 621-625 - 1974
W. Blumenfeld1, P. David Wilson1, S. Turney1
1Department of Surgery, Univesity of Maryland Hospital, Baltimore, USA

Tóm tắt

A mathematical model is developed for the measurement of respiratory air flow, based on the phase shift of ultrasonic pulse trains. A correction is made for the velocity of found as a function of gas composition, moisture, temperature and pressure. Error estimates and calibration procedures as they relate to clinical application are discussed.

Tài liệu tham khảo

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