摘要
研究了跟踪血流速度的时域相关方法，对连续周期回声信号作相关运算可得到血流一维速度分布，采用滑动时窗分段相关法可检测多个散射元移动时的速度分布，声束线性扫描得到二维血流速度剖面，检测精度和分辨力高于Ｄｏｐｐｌｅｒ频域法．
This paper describes the method of detecting blood flow velocity profile via time domain correlation. One dimensional velocity distribution may be detected by calculation correlation consecutive periodicity echo signal pairs. The method of correlation calculation may detect many scatterers velocity distributions with moving time windows. The two dimensional velocity profile can be detected with ultrasound beam scanning. The precision and resolution are better than Doppler frequency domain method.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
1998年第5期26-30,共5页
Journal of Xi'an Jiaotong University
关键词
超声检测
时域相关
血流信号检测
血流速度
ultrasound detection time domain correlation blood flow detection
