Patent ID: 8684934

Claim:
An ultrasound system, comprising: an ultrasound data acquisition device configured to transmit and receive ultrasound signals to and from a target object to output a plurality of ultrasound data corresponding to each pixel of a color Doppler mode image; and a processor in communication with the ultrasound data acquisition device and being configured to: form a matrix corresponding to each of the pixels based on the plurality of ultrasound data; form a plurality of sub matrixes corresponding to each of the matrixes; calculate a power difference value among the plurality of sub matrixes based on a mean frequency and a power corresponding to each of the plurality of sub matrixes; determine whether the power difference value is equal to or larger than a first threshold value; perform first singular value decomposition (SVD) clutter filtering for removing the sub matrix corresponding to the mean frequency as a clutter signal component and second SVD clutter filtering for performing a matrix operation upon the sub matrix corresponding to the mean frequency as a Doppler signal component based on the mean frequency, a predetermined first cutoff frequency and a predetermined second cutoff frequency when the power difference value is equal to or larger than the first threshold value; and perform clutter filtering upon the plurality of ultrasound data when the power difference value is less than the first threshold value.