DocumentCode
534681
Title
The enhancement of pulse-echo ultrasound signal using Adaptive filter with NLMS
Author
Li, Dongdong ; Wang, Hui ; Deng, Juan ; Zheng, Zheng ; Bu, Zhaohui
Author_Institution
Univ. of Shanghai for Sci. & Technol., Shanghai, China
Volume
3
fYear
2010
fDate
16-18 Oct. 2010
Firstpage
1050
Lastpage
1053
Abstract
The echo signal polluted by noise needs to be filtered in the ultrasound imaging system. However, the conventional fixed bandpass filter doesn´t work effectively, because the bandwidth and center frequency of the ultrasound echo signal is time-varying. The Adaptive filter with NLMS then is applied to resolve this problem. A method to evaluate its performance is also developed. Phantom experiment shows that adaptive filter with NLMS is able to enhance the SER (Signal Error Ratio) for about 8dB.
Keywords
adaptive filters; biomedical ultrasonics; image enhancement; least squares approximations; medical image processing; phantoms; NLMS; adaptive filter; normalized least mean square method; phantom; pulse-echo ultrasound signal; signal enhancement; signal error ratio; Adaptive filters; Band pass filters; Convergence; Reflection; Scattering; Ultrasonic imaging; Wires; NLMS; SER; adaptive enhancement; time-varying;
fLanguage
English
Publisher
ieee
Conference_Titel
Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on
Conference_Location
Yantai
Print_ISBN
978-1-4244-6495-1
Type
conf
DOI
10.1109/BMEI.2010.5639746
Filename
5639746
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