Problem to be solved: to provide an ultrasonic diagnostic apparatus and a method of operating an ultrasonic diagnostic apparatus, in which the degree of depolarization varies between ultrasonic transducers, to obtain an appropriate determination result about the necessity of polarization of the ultrasonic vibrator.An ultrasonic vibrator unit equipped with a plurality of ultrasonic transducers transmits and receives ultrasonic waves inside the subjectIf the confirmation operation is operated,Control sectionThe driving voltage supply section is controlled so that a drive voltage is supplied as a driving object oscillator to all of the plurality of ultrasonic oscillatorsIf the confirmation operation is operated,Depolarization decision sectionThe sensitivity of the ultrasonic transducer is calculated by the ultrasonic transducer.AndIt is judged whether the degree of depolarization determined from the received sensitivity by ultrasonic transducer satisfies the numerical condition.When the depolarization determination value meets the numerical conditionsA voltage supply part for polarization isThe polarization voltage is supplied to each of the plurality of ultrasonic oscillators.Diagram【課題】脱分極の程度が超音波振動子間でばらつく場合にも、超音波振動子の分極の要否について妥当な判定結果が得られる超音波診断装置、及び超音波診断装置の作動方法を提供する。【解決手段】複数の超音波振動子を備えた超音波振動子ユニットが被検体の内部にて超音波を送受信し、確認用操作部が操作された場合に、制御部が、複数の超音波振動子の全てを駆動対象振動子として駆動電圧が供給されるように駆動電圧供給部を制御し、確認用操作部が操作された場合に、脱分極判定部が、複数の超音波振動子の全てを駆動対象振動子として駆動して超音波を受信したときの受信感度を超音波振動子別に算出し、且つ、超音波振動子別の受信感度から求められる脱分極判定値が数値条件を満たすかを判定し、脱分極判定値が数値条件を満たすとき、分極用電圧供給部が、複数の超音波振動子の各々に対して分極用電圧を供給する。【選択図】図４
