北京生物医学工程2012，Vol.31Issue(2)：159-163,5.DOI:10.3969/j.issn.1002-3208.2012.02.10.
超声多普勒血流和管壁搏动信号的分离研究
Separation method of the Doppler ultrasound blood flow from vessel wall pulsation signals
摘要
Abstract
Objective In Doppler ultrasound blood flow detection, the traditional high-pass filter would eliminate the low-frequency blood flow signals when it eliminated the vessel wall pulsation signals, so we proposed a method of adaptive filtering which used electrocardiography (ECG) as reference signal to eliminate wall interference. Methods First we utilized the ECG as reference signal for the Doppler ultrasound signals in adaptive filter. Then we adopted the multi-level adaptive filters and selected different reference signals in the filtering programs. Finally we used both methods, the proposed method and high-pass filter, to treat the simulation signals of Doppler ultrasound, and compared the two results. Results The proposed method effectively restrained the wall pulsation signals, and kept a portion of the low blood flow signal components. Conclusions This method could extract the complete Doppler ultrasound blood flow signals accurately, which is valuable for clinical application.关键词
超声多普勒/血管壁搏动/血流信号/分离/自适应滤波Key words
Doppler ultrasound/ vessel wall pulsation/ separation/ blood flow signal/ adaptive filter分类
医药卫生引用本文复制引用
朱易顺,彭虎..超声多普勒血流和管壁搏动信号的分离研究[J].北京生物医学工程,2012,31(2):159-163,5.基金项目
国家自然科学基金(60871087,61172037)资助 （60871087,61172037）
