Study and Implementation of a Signal Processing Algorithm for Doppler Ultrasound Fetal Heart Signals | IEEE Conference Publication | IEEE Xplore

Study and Implementation of a Signal Processing Algorithm for Doppler Ultrasound Fetal Heart Signals


Abstract:

The Doppler ultrasound fetal heart signals are weak and complex, while the background noise is strong. It results in many problems for household integrated Doppler fetal ...Show More

Abstract:

The Doppler ultrasound fetal heart signals are weak and complex, while the background noise is strong. It results in many problems for household integrated Doppler fetal heart monitors, such as low sensitivity, small measuring area, low accuracy of fetal heart rates, and self-excited howling. A fetal heart signal processing algorithm is proposed in this paper, which includes the adaptive denoising method based on spectral subtraction and the non-linear self-excitation suppression processing algorithm. The measuring results in a Doppler ultrasound fetal heart simulator and pregnant women show that the good denoising effect can been achieved and the signal-to-noise of the signals can been greatly enhanced by the proposed algorithm. Also, the sensitivity of fetal heart measurement is improved and the self-excited howling is eliminated effectively.
Date of Conference: 19-21 June 2019
Date Added to IEEE Xplore: 16 September 2019
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Conference Location: Xi'an, China

I. Introduction

In recent years, the number of pregnant women in China has remained above 13 million over the past decade[1] In addition, with the improvement of economic level and health awareness, people pay more attention to the health of pregnant women. Therefore, the health monitoring of the fetus is particularly important. Fetal heart rate (FHR) is critical in fetal heart monitoring[2]. The traditional fetal heart rate monitoring mainly relies on pregnant women to go to the hospital for regular check-up. However, going to the hospital frequently will greatly increase the physical burden of pregnant women and the pressure of hospital resources, so the development of at-home Doppler fetal heart monitor can effectively provide convenience for pregnant women who can achieve fetal monitoring at home.

References

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