Patent ID: 7905837

Claim:
An ultrasound diagnostic apparatus comprising: an ultrasound probe configured to perform two-dimensional (2D) scanning and three-dimensional (3D) scanning; a transceiver device configured to drive said ultrasound probe to perform 2D scanning and 3D scanning of a subject with an ultrasound beam; a storage device configured to store 3D data obtained by 3D scanning; a display device configured to display a combined image including a 3D image resulting from projection of the stored 3D data, an initial position of a 2D scanning plane for use in Doppler measurement, and a Doppler cursor in a prescribed projecting direction; an instruction-responsive altering device configured to accept an instruction from an operator and to alter the projecting direction and a position of the Doppler cursor in accordance with the instruction; and a Doppler measurement device configured to perform Doppler measurement using a finalized position of the 2D scanning plane and the Doppler cursor.