Emboli detection using the Doppler ultrasound technique

作     者：WANG Yuanyuan, CHEN Xi, ZHANG Yu, WANG Weiqi (Department of Electronic Engineering, Fudan University,Shanghai 200433,China) 

作者机构：Department of Electronic Engineering Fudan University Shanghai 200433 China 

出 版 物：《声学技术》 (Technical Acoustics)

年 卷 期：2003年第22卷第Z1期

页      面：15-18页

学科分类：07[理学] 08[工学] 070206[理学-声学] 0802[工学-机械工程] 0702[理学-物理学] 

主　　题：embolic signal,Doppler ultrasound,detection 

摘      要：Embolic detection is very important to the early diagnosis of vessel disease. The Doppler ultrasound technique is one of the common methods to detect the emboli non-invasively. When the emboli pass through the sample volume of the Doppler ultrasound instrument, there exist high intensity transient Doppler signals. Thus the emboli can be detected directly from the variation of Doppler signal amplitude. Since there may be some disturbance in the system, this general detection method has great limitation. To improve the accuracy of emboli auto-detection, several novel methods are studied to obtain the sensitive characteristic of the emboli signals using the new signal processing theories.