Patent ID: 9476861
Filing Date: 2016-10-25
CPC Classification: A61B,B06B,G01N

Claim Text:
1. An ultrasonic diagnostic device comprising: an ultrasound probe which transmits an ultrasonic wave to an object and receives a reflected wave from the object; a transmission unit which transmits the ultrasonic wave; a reception unit which receives the reflected wave from the object; a control unit which controls the transmission unit and the reception unit; and a bias power source which supplies a bias voltage to the ultrasound probe, wherein the ultrasound probe includes a plurality of CMUT cells each having an upper electrode and a lower electrode which are disposed opposite to each other to apply the bias voltage, and a vibrating membrane which is disposed between the upper electrode and the lower electrode and vibrates during transmission and reception, and a transmission and reception sensitivity correction unit which corrects the bias voltage supplied from the bias power source on the basis of correction data for correcting the bias voltage applied to the upper electrode and the lower electrode and supplies the corrected bias voltage to the upper electrode and the lower electrode, and the correction data is calculated using at least one parameter selected from the thickness of the vibrating membrane and the resonance frequency of the vibrating membrane.