MICROBUBBLE DETECTION DURING CARDIOPULMONARY BYPASS.

E. Zahedi, M. Lescure, N. Chauveau, R. Barthelemy, J. P. Morucci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The system described consists of a frequency generator set at between 130 KHz and 200 KHz. The central frequency of the receiver transducer was twice that of the transmission signal. Its output was amplified and high-pass filtered to reject, as far as possible, the first harmonic. This signal was then mixed with a signal at twice the transmission frequency plus a 20-KHz shift. A low-pass filter removed the high frequency component, while a demodulator detected the envelope signal which is directly proportional to the second-harmonic amplitude.

Original languageEnglish
Title of host publicationIEEE/Engineering in Medicine and Biology Society Annual Conference
Place of PublicationNew York, NY, USA
PublisherIEEE
Pages1517-1518
Number of pages2
Publication statusPublished - 1987
Externally publishedYes

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Demodulators
Low pass filters
Transducers

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Zahedi, E., Lescure, M., Chauveau, N., Barthelemy, R., & Morucci, J. P. (1987). MICROBUBBLE DETECTION DURING CARDIOPULMONARY BYPASS. In IEEE/Engineering in Medicine and Biology Society Annual Conference (pp. 1517-1518). New York, NY, USA: IEEE.

MICROBUBBLE DETECTION DURING CARDIOPULMONARY BYPASS. / Zahedi, E.; Lescure, M.; Chauveau, N.; Barthelemy, R.; Morucci, J. P.

IEEE/Engineering in Medicine and Biology Society Annual Conference. New York, NY, USA : IEEE, 1987. p. 1517-1518.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zahedi, E, Lescure, M, Chauveau, N, Barthelemy, R & Morucci, JP 1987, MICROBUBBLE DETECTION DURING CARDIOPULMONARY BYPASS. in IEEE/Engineering in Medicine and Biology Society Annual Conference. IEEE, New York, NY, USA, pp. 1517-1518.
Zahedi E, Lescure M, Chauveau N, Barthelemy R, Morucci JP. MICROBUBBLE DETECTION DURING CARDIOPULMONARY BYPASS. In IEEE/Engineering in Medicine and Biology Society Annual Conference. New York, NY, USA: IEEE. 1987. p. 1517-1518
Zahedi, E. ; Lescure, M. ; Chauveau, N. ; Barthelemy, R. ; Morucci, J. P. / MICROBUBBLE DETECTION DURING CARDIOPULMONARY BYPASS. IEEE/Engineering in Medicine and Biology Society Annual Conference. New York, NY, USA : IEEE, 1987. pp. 1517-1518
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