Study of properties of periodic fetal movements and of the corresponding ultrasonic Doppler signals

• Autorzy: Kałużyński K. , Kret T. , Sieńko J.
• Języki publikacji: EN

Abstrakty

EN

Doppler signals collected on the abdomen of the pregnant woman were submitted to the discrete wavelet transform using the db 10 wavelet. The wavelet reconstruction products were submitted to the autocorrelation analysis. The processing, supported with the ultrasonographic scanning enabled identification of the fetal periodic activities. The fetal pseudo-breathing movement velocity always falls in the range of 5-10 mm/s (Doppler frequency range 12.5-25 Hz), velocities of cardiac structures - in the range of 20-75 mm/s (Doppler frequency 50-200 Hz). The signals resulting from fetal displacements provoked by maternal breathing and cardiac action or fetal hiccup are expected not to adversely affect estimation of the fetal rhythms. These findings are important for the development of fetal monitoring systems.

Słowa kluczowe

EN

fetal activity; Doppler signal; ultrasound; fetal pseudo-breathing; wavelet transform; correlation

PL

aktywność płodu; sygnał Dopplera; transformacja falkowa; korelacja

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2007
• Tom: Vol. 27, no. 4
• Strony: 3--16
• Opis fizyczny: Bibliogr. 26 poz., rys., wykr.

Twórcy

autor

Kałużyński K.

autor

Kret T.

autor

Sieńko J.

• Institute of Precision and Biomedical Engineering, Faculty of Mechatronics, Warsaw University of Technology, św. A. Boboli 8, 02-525 Warszawa, Poland,

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