利用超声多普勒技术检测血栓  

Emboli detection using the Doppler ultrasound technique

作　　者：汪源源[1] 陈曦[1] 张羽[1] 王威琪[1] 

机构地区：[1]复旦大学电子工程系,上海200433

出　　处：《声学技术》2002年第1期29-33,共5页Technical Acoustics

摘　　要：血栓检测对早期诊断血管疾病有十分重要的意义 ,超声多普勒技术是一种常用的血栓无损检测方法。当血栓通过超声多普勒仪器的采样容积时 ,会引起超声多普勒信号功率的瞬时增强 ,因此可以直接根据超声多普勒信号时域波形幅度的变化来检测血栓。但是由于系统可能存在着干扰 ,这种基本的检测方法有着较大的局限。为了克服这一缺陷 ,可以利用信号处理的新理论 ,通过提取血栓信号的敏感特征参数 ,来达到提高血栓自动检测准确性的目的。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.

关 键 词：超声多普勒技术 检测 血栓 脑血管疾病 早期诊断 脑栓塞 

分 类 号：R743[医药卫生—神经病学与精神病学] R445.1[医药卫生—临床医学]