The ultrasonic diagnostic device which indicates the high contrast ultrasonic picture which emphasizes the contour structure of the inspection object is offered. Namely, moving vector of the object which it occurs between the pictures which are used for addition processing making use of the ultrasonic picture which is taken in is measured, the deformation processing which is based on the measurement result is done vis-a-vis the cumulative addition picture, in the acquisition picture and the cumulative addition picture weight factor is done power and addition processing is done.検査対象の輪郭構造を強調した高コントラスト超音波画像を表示する超音波診断装置を提供する。すなわち、取り込んだ超音波画像を用いて加算処理に用いる画像間に生じた対象の動きベクトルを計測し、計測結果に基づいた変形処理を累積加算画像に対して行い、取得画像と累積加算画像とに重み係数を乗して加算処理を行なう。
