超声多普勒血流信号谱组成

Spectral Composition of Ultrasound Doppler Blood Flow Signals

采用理论分析与模型仿真研究了超声多普勒（Ｄｏｐｐｌｅｒ）血流测量和成象技术中信号的谱组成问题．在一定的假设前提下讨论了谱展宽和波束照射等因素对Ｄｏｐｐｌｅｒ血流信号的影响，并给出了仿真实验结果．分析结果在血流最大速度校正。

The problems of ultrasound Doppler spectral composition in flow measurement and imaging technology are investigated through theory analysis and model simulation. The effects of spectral broadening, beam insonation and high pass filter properties on Doppler signal are discussed. Experiment results are investigated. The research methods and results may be used in peak blood flow velocity correction, turbulence estimating and the diagnosis of vascular diseases.