As the fault picture is acquired with one ultrasonic probe, the ultrasonic diagnostic device which can acquire the elastic information by the shear wave, in order to offer the propagation picture formation method of the shear wave, it generates the shear wave to suffering inspection body 5 in the process which acquires the fault picture on the basis of the reflected echo signal which is received with the ultrasonic probe 4 which sends and receives the ultra wave with suffering inspection bodies 5, due to vibrating body, 3 forms the shear wave picture and indicates.1つの超音波プローブで断層画像を取得するとともに、せん断波による弾性情報を取得できる超音波診断装置、せん断波の伝搬画像生成方法を提供するために、被検体5との間で超音波を送受する超音波プローブ4により受信した反射エコー信号に基づいて断層画像を取得する過程において、振動体3により被検体5にせん断波を発生させ、せん断波画像を生成して表示する。
