The ultrasonic diagnostic device which can acquire the elastic information by the shear wave simply and in order to offer ultrasonic measurement method, the ultrasonic probe the vibrating body the sending and receiving section propagation position of 2,6 where does transmission of the ultra wave and reception processing with 3 which generates 4 which sends and receives the ultra wave with suffering inspection bodies 5 and the shear wave and ultrasonic probe 4 and the shear wave and the shear wave propagation sensing station the shear wave picture component 16 which forms the shear wave picture which displays the relationship between propagation position and propagation delay time of 14 which calculates the propagation delay time of the shear wave and the shear wave and the shear waveThe ultrasonic diagnostic device which has with the elastic information arithmetic logical unit 15 which calculates elastic information on the basis of the boundary of the picture is formed.せん断波による弾性情報を簡便に取得できる超音波診断装置及び超音波計測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と、せん断波を発生させる振動体3と、超音波プローブ4との間で超音波の送信及び受信処理を行う送受信部2,6と、せん断波の伝搬位置とせん断波の伝搬時間とを求めるせん断波伝搬検出部14と、せん断波の伝搬位置と伝搬時間との関係を表すせん断波画像を構成するせん断波画像構成部16と、せん断波画像の境界に基づいて弾性情報を演算する弾性情報演算部15とを備える超音波診断装置を構成する。
