基于三次样条重建的超声多普勒血流信号提取  

Extracting Doppler Ultrasound Blood Signals Based on the Cubic Spline Reconstruction

作　　者：陶倩[1] 汪源源[1] 王威琪[1] 

机构地区：[1]复旦大学电子工程系,上海200433

出　　处：《电子学报》2005年第1期154-157,共4页Acta Electronica Sinica

基　　金：科技部中葡科技合作项目第四届A0 5

摘　　要：根据超声多普勒血流信号和血管壁搏动信号的不同统计特性 ,对采集的多普勒信号进行非均匀抽样和三次样条函数重建 ,从中得到血管壁搏动信号 ,从而提取出超声多普勒系统中的血流信号 .对计算机仿真的超声多普勒信号和采集的人体颈总动脉多普勒信号分别应用该方法 ,并和传统的高通滤波器方法进行比较 .实验结果表明 :本方法能在滤除管壁搏动信号的同时 ,保留低频部分的超声多普勒血流信号 ,可用于超声多普勒系统中两种信号成份的分离 .Based on the different statistical characteristics of Doppler ultrasound blood flow signals and wall clutter signals, the non-uniform sampling and cubic spline reconstruction are applied to the mixed signals to obtain the wall signals, and consequently blood signals. This novel method, together with the traditional high-pass filtering method, is applied to both computer simulated Doppler ultrasound signals and collected human carotid Doppler ultrasound signals. The comparison experiments indicate that the proposed method can remove wall clutter signals with preservation of low frequency blood components, thus is suitable for the separation of the wall and blood signals in Doppler ultrasound systems.

关 键 词：超声多普勒 非均匀采样 三次样条 重建 

分 类 号：TB559[理学—物理]