PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus capable of performing simultaneous measurement in orientation directions, when performing measurement utilizing a CWD method in ultrasonic diagnosing.SOLUTION: An ultrasonic diagnostic apparatus includes: a transmission unit for generating driving signals for which a plurality of frequencies allocated to each of a plurality of orientation directions are multiplexed, and supplying the driving signals to a plurality of ultrasonic vibrators with delay time different for the respective ultrasonic vibrators a signal processing unit for generating a plurality of beam signals corresponding to the respective orientation directions by adding respective echo signals received by the respective ultrasonic vibrators with the delay time different for the respective ultrasonic vibrators and separating them for the respective frequencies and a Doppler processing unit for detecting Doppler shift frequencies for the respective orientation directions using the plurality of beam signals corresponding to the respective orientation directions.COPYRIGHT: (C)2013,JPO&INPIT【課題】超音波診断においてCWD法を利用した計測を行う場合において、方位方向への同時計測を可能とする超音波診断装置を提供すること。【解決手段】複数の方位方向のそれぞれに割り当てられた複数の周波数が多重化された駆動信号を発生し、当該駆動信号を各超音波振動子毎に異なる遅延時間を持って複数の超音波振動子に供給する送信ユニットと、各超音波振動子が受信した前記各エコー信号を前記各超音波振動子毎に異なる遅延時間を持って加算し、各周波数毎に分離することで、各方位方向に対応する複数のビーム信号を発生する信号処理ユニットと、各方位方向に対応する複数のビーム信号を用いて、各方位方向毎のドプラ偏移周波数を検出するドプラ処理ユニットと、を具備する。【選択図】図2
