< Topic > At the time of the acquisition of the elastic image of locomotive tissue, corresponding to the fluctuation of the displacement quantity of that locomotive tissue, selecting ideal period in acquisition of the elastic image, stabilizing, you acquire the elastic image of high picture quality. Solutions On the basis of displacement quantitative detection expedient and the displacement quantity which detect the displacement quantity of locomotive tissue making use of elastic image acquisition expedient and the formal image data which acquire the elastic image which displays the elastic information of the region where it receives with ultrasonic transmission expedient and the ultrasonic probe which output the ultrasonic signal which drives the ultrasonic probe and the ultrasonic probe which the ultra wave sending and receiving are done with the region which includes the locomotive tissue of the suffering inspection body plural uses the data of formal image acquisition expedient and the formal image which acquire the formal image which displays the formal information of the region which from the reflected echo signal which the wave is done includes the aforementioned locomotive tissue and includes locomotive tissueThe selective expedient which selects the acquisition period of the elastic image and, it possesses, elastic image acquisition expedient features that the elastic image is acquired in the period when it is selected.< Selective figure > Figure 1【課題】 運動組織の弾性像の取得に際し、その運動組織の変位量の変動に対応して、弾性像の取得に好適な期間を選択して、安定して高画質の弾性像を取得する。【解決手段】 被検体の運動組織を含む部位との間で超音波を送受信する超音波探触子と、超音波探触子を駆動する超音波信号を出力する超音波送信手段と、超音波探触子により受波された反射エコー信号から前記運動組織を含む部位の形態情報を表す形態像を取得する形態像取得手段と、形態像のデータを複数用いて運動組織を含む部位の弾性情報を表す弾性像を取得する弾性像取得手段と、形態像データを用いて運動組織の変位量を検出する変位量検出手段と、変位量に基づいて弾性像の取得期間を選択する選択手段と、を有し、弾性像取得手段は、選択された期間において弾性像を取得することを特徴とする。【選択図】 図1
