Extracting of the ultrasound fetal heart rate signal based on wavelet packet mix node threshold

Author

Wang, Mingquan ; Zhu, Wanli ; Zhang, Shi ; Wang, Zijing

Author_Institution

Coll. of Inf. Sci. & Eng., Northeastern Univ., Shenyang, China

Volume

2

fYear

2011

fDate

15-17 Oct. 2011

Firstpage

749

Lastpage

752

Abstract

Clinically, fetal heart rate, to a certain extent, reflects the health of the fetus. Therefore, how to extract the fetal heart rate signals in ultrasound fetal heart rate signal processing has been a key issue. In this paper, a new wavelet packet mix node threshold (WPMNT) denoising algorithm based on the maximum wavelet packet energy entropy is proposed. Moreover, based on the threshold given by the new algorithm, a new wavelet packet threshold function is constructed for ultrasound fetal heart rate signal denoising. Experimental results show that this algorithm gives better signal noise ratio (SNR) gains and mean square error (MSE) performance than traditional algorithms.

Keywords

biomedical ultrasonics; blood pressure measurement; entropy; medical signal processing; obstetrics; patient diagnosis; signal denoising; WPMNT denoising algorithm; maximum wavelet packet energy entropy; mean square error; signal denoising; signal noise ratio; ultrasound fetal heart rate signal processing; wavelet packet mix node threshold; Entropy; Fetal heart rate; Noise reduction; Signal processing algorithms; Ultrasonic imaging; Wavelet packets; FHR; energy entropy; threshold function; wavelet packet;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics (BMEI), 2011 4th International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-9351-7

Type

conf

DOI

10.1109/BMEI.2011.6098378

Filename

6098378