The reception signal adjustment section and the description above which adjust the position of distance direction of the reception signal on the basis of the displacement quantity of the standard displacement quantitative test section and the aforementioned datum point which measure the reception section and the displacement quantity the ultrasonic diagnostic device, the transmission section and the aforementioned ultrasonic transmission wave which drive the ultrasonic probe in order to transmit the ultrasonic transmission wave to organization of the organism is obtained by reflecting at the time of the aforementioned organism organizing expands the ultrasonic reflected wave which is received with the aforementioned ultrasonic probe forms the reception signal of the datum point where which is set on the aforementioned reception signal, being based on the reception signal which was adjustedIt has with the form change value arithmetic logical unit which measures the position displacement quantity in the plural measurement points which are set while organizing the aforementioned organism.超音波診断装置は、生体の組織へ超音波送信波を送信するための超音波プローブを駆動する送信部と、前記超音波送信波が前記生体組織において反射することにより得られ、前記超音波プローブにより受信する超音波反射波を増幅し、受信信号を生成する受信部と、前記受信信号上に設定された基準点の変位量を測定する基準変位量測定部と、前記基準点の変位量に基づき、受信信号の距離方向の位置を調整する受信信号調整部と、前記調整された受信信号に基づき、前記生体の組織内に設定された複数の計測点における位置変位量を計測する形状変化値演算部とを備える。
