PROBLEM TO BE SOLVED: To acquire excellent reception ultrasonic image drawing while suppressing costs.SOLUTION: An ultrasonic probe 2 includes a transmission opening composed of a plurality of vibrators 2a. The transmission opening includes a plurality of vibrator groups including at least a first vibrator group and a second vibrator group. An ultrasonic diagnosis apparatus S includes: a transmission part 12 that generates a plurality of drive signals whose drive waveforms including at least a first drive signal and a second drive signal are different, gives time delay to the plurality of drive signals so that a transmission ultrasonic wave is focused on the same focal point, outputs the first drive signal to the first vibrator group, outputs the second drive signal to the second vibrator group, and outputs the plurality of drive signals to the plurality of vibrator groups of the transmission opening a reception part 13 for receiving a reception signal from the ultrasonic probe 2 and an image generation part 14 for generating ultrasonic image data from the reception signal.SELECTED DRAWING: Figure 2【課題】コストを抑えて良好な受信超音波画像描出を得ることである。【解決手段】超音波探触子2は、複数の振動子2aにより構成された送信開口を有する。送信開口は、第1振動子群及び第2振動子群を少なくとも含む複数の振動子群を有する。超音波診断装置Sは、第1駆動信号及び第2駆動信号を少なくとも含む駆動波形が異なる複数の駆動信号を生成し、送信超音波が同一焦点に集束するよう時間遅延を複数の駆動信号に与えて、第1駆動信号を第1振動子群に出力し、第2駆動信号を第2振動子群に出力して、複数の駆動信号を送信開口の複数の振動子群に出力する送信部12と、超音波探触子2から受信信号を受信する受信部13と、受信信号から超音波画像データを生成する画像生成部14と、を備える。【選択図】図2
