3 dimensional elastic image which shows the hardness or softness of the body tissue of the suffering inspection body is formed, the ultrasonic diagnostic device and the ultrasonic image display manner which are displayed are offered. The ultrasonic probe through 2 which possesses the vibrator which the ultra wave sending and receiving is done and ultrasonic probe 2, the RF signal frame data choice section the RF signal frame in 21 which chooses the aforementioned RF signal frame data in the aforementioned specified range which is stored in the RF signal frame data storage section 20 which stores the specified range of the RF signal frame data which is based on the reflective echo signal which is received the transmission section by the reception section 4 which receives the reflective echo signal from of 3 which transmits the ultra wave to suffering inspection body 1 and suffering inspection body 1 and the said reception section 4 and RF signal frame data storage section 20 and the aforementioned specified rangeDeformation from the data it has with 3 dimensional elastic image component 28 which forms 3 dimensional elastic image or the elastic information operation section 23 operation elastic modulus and the said on the basis of the deformation or the elastic modulus operation.被検体の生体組織の硬さ又は軟らかさを示す3次元弾性画像を構成し、表示する超音波診断装置及び超音波画像表示方法を提供する。超音波を送受信する振動子を有する超音波探触子2と、超音波探触子2を介して被検体1に超音波を送信する送信部3と、被検体1からの反射エコー信号を受信する受信部4と、該受信部4により受信された反射エコー信号に基づくRF信号フレームデータの所定範囲を記憶するRF信号フレームデータ記憶部20と、RF信号フレームデータ記憶部20に記憶された前記所定範囲における前記RF信号フレームデータを選択するRF信号フレームデータ選択部21と、前記所定範囲におけるRF信号フレームデータから歪み又は弾性率を演算する弾性情報演算部23と、該演算された歪み又は弾性率に基づいて3次元弾性画像を構成する3次元弾性画像構成部28とを備える。
