Patent ID: 9320497
Filing Date: 2016-04-26
CPC Classification: A61B

Claim Text:
1. An ultrasound diagnostic apparatus comprising: a transducer array having a plurality of transducers arranged in an array; a transmission circuit which supplies an actuation signal to each transducer of the transducer array to transmit an ultrasonic wave toward a subject; a plurality of reception signal processors corresponding to the plurality of transducers, each of the plurality of reception signal processors including a delay circuit which delays a reception signal output from a corresponding transducer to output a delayed reception signal as sample data; a reception signal correction hardware processing unit configured to impart a delay amount which compensates for a change in center frequency corresponding to an angle between the reflection point and the acoustic radiation surface in each transducer in order to delay the reception signal output from each transducer by the delay amount with the delay circuit in each reception signal processor to make the center frequency of the reception signal output from each transducer constant; a phasing adder which produces a sound ray signal through phasing addition of sample data output from the plurality of reception signal processors; and an image producer which produces an ultrasound image on the basis of the sound ray signal produced by the phasing adder.