Patent ID: 8858446

Claim:
A color Doppler ultrasonic diagnosis apparatus comprising: an ultrasonic probe; a transmission/reception circuit configured to transmit/receive an ultrasonic wave to/from an object via the ultrasonic probe; a quadrature phase detection circuit configured to perform quadrature phase detection of an output from the transmission/reception unit; a filter configured to perform a first orthogonal transformation for an output from the quadrature phase detection circuit in a depth direction, perform a second orthogonal transformation for a result obtained by the first orthogonal transformation in an ensemble direction, extract a blood flow component from the frequency data using a two-dimensional filter, and to sequentially perform an inverse transformation of the second orthogonal transformation and an inverse transformation of the first orthogonal transformation for an output from the two-dimensional filter; and a blood flow component information calculation unit configured to calculate blood flow component information based on an output from the filter.