Patent ID: 8303504

Claim:
An ultrasonic diagnostic apparatus comprising: a transmitting and receiving unit for supplying drive signals to plural ultrasonic transducers to transmit ultrasonic waves and converting reception signals outputted from said plural ultrasonic transducers, which have received ultrasonic echoes, into digital signals; a reception focus processing unit for performing reception focus processing on the digital signals to generate a sound ray signal along a reception direction of ultrasonic waves; a B-mode image generating unit for generating a B-mode image signal representing a B-mode image based on the sound ray signal generated by said reception focus processing unit; a console to be used for designating a line in the B-mode image; a first calculating unit for performing quadrature detection processing on the sound ray signal generated by said reception focus processing unit to generate a complex baseband signal at plural sampling points along the designated line; a second calculating unit for obtaining phase information of the complex baseband signal; an image signal generating unit for generating an image signal representing an image of phase differences of the complex baseband signal at the plural sampling points along the designated line relative to a linear approximation of a phase of the complex baseband signal based on the phase information of the complex baseband signal; and a display unit for displaying the B-mode image together with the image of the phase differences of the complex baseband signal.