PROBLEM TO BE SOLVED: To enable more effective energy consumption in inspection and diagnosis of biological tissue.SOLUTION: An ultrasonic diagnostic apparatus according to an embodiment includes: a detection part which detects a biological signal changing with time a determination part which determines whether or not the biological signal becomes a predetermined time phase on the basis of the detected biological signal and a control part which is operated in a first operation mode in which transmitted acoustic output from an ultrasonic probe is predetermined strength and a dynamic range in amplification of a reception signal received by the ultrasonic probe is predetermined extent, and operated in a second operation mode in which transmitted acoustic output is stronger than that of the first operation mode and the dynamic range is wider than that of the first operation mode in a case in which it is determined that the biological signal becomes the predetermined time phase.COPYRIGHT: (C)2015,JPO&INPIT【課題】生体組織の検査・診断時におけるより効率的なエネルギー消費を可能とする。【解決手段】実施形態の超音波診断装置は、経時的に変化する生体信号を検出する検出部と、検出された生体信号に基づいて、生体信号が所定の時相になったか否かを判定する判定部と、超音波プローブからの送信音響出力を所定の強さとし、超音波プローブで受信された受信信号の増幅におけるダイナミックレンジを所定の広さとする第1の動作モードで動作させ、所定の時相になったと判定された場合には、第1の動作モードよりも送信音響出力を強く且つダイナミックレンジを広くする第2の動作モードで動作させる制御部と、を備える。【選択図】図2
