Patent ID: 8864671

Claim:
A method for color flow imaging, comprising: transmitting, with a transmitting circuit, a pulse; receiving, with a probe, a pulse echo; performing, with a beamforming module, beamforming on the received pulse echo; performing, with a quadrature demodulation module, quadrature demodulation on a signal obtained after the beamforming to acquire a complex signal; calculating, with a first characteristic estimation module, tissue characteristic parameters based on the complex signal; performing, with a wall filtering module, wall filtering on the complex signal to filter out low-speed tissue information; performing, with a dynamic threshold value calculating module, weighting processing on the tissue characteristic parameters to acquire dynamic threshold values; calculating, with a second characteristic estimation module, flow characteristic parameters based on the complex signal after the wall filtering; determining, with a typical flow identification module, an independent flow signal based on the flow characteristic parameters; determining, with a typical motion artifact identification module, a similar signal from first flow signals which are different from the independent flow signal after determining the independent flow signal; determining, with a similar signal identification module, a second flow signal which has similar characteristics to a motion artifact from the similar signal according to the dynamic threshold values; and synthesizing, with a flow signal synthesis module, the independent flow signal and the second flow signal to acquire a complete flow signal; and mapping, with an image output module, the complete flow signal to a color flow image for outputting.