Stoel Rives LLP
Automatic detection system and method of spectral Doppler blood flow velocity
A method and system for detecting spectral Doppler blood flow velocity are disclosed. The method comprises the steps of: obtaining Doppler signals of the flow by demodulating, filtering, and analog-to-digital converting RF ultrasonic echoes; analyzing the spectrum of the Doppler signals to obtain each of the power spectral lines of the Doppler signal varying with time; determining a threshold; and determining the frequency shift parameters or the blood flow velocity corresponding to the current power spectral line based on the threshold and the current power spectral line.
Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
G G G A A A
G01S G01F G01S A61B A61B A61B
inventional inventional additional additional inventional additional
Yong
Li