PROBLEM TO BE SOLVED: To realize an ultrasonic diagnostic system which enables the stable generation of an image of an interface between different tissues of a subject.SOLUTION: The ultrasonic diagnostic system 20 is constituted of a means which generates ultrasonic images of the tissues at sectional sites of the subject 18 from ultrasonic tomographic data obtained by measurements made by the repeated transmission and reception of ultrasonic waves to and from the subject and a display means for displaying the ultrasonic images. A correlation value or variations in the correlation value is determined for the ultrasonic tomographic data at a plurality of measuring points of the sectional sites of the subject from a pair of ultrasonic tomographic data acquired at different acquisition timings. The results are compared with the respective thresholds to be divided and an image 30 of the interface between the tissues is generated to be displayed on a display means together with the ultrasonic wave images.COPYRIGHT: (C)2008,JPO&INPIT【課題】安定して被検体の異なる組織間の境界の画像を生成する超音波診断装置を実現する。【解決手段】超音波診断装置20を、被検体18との間で繰り返し超音波を送受信して計測された超音波断層データに基づいて、被検体の断層部位における組織の超音波画像を生成する手段と、この超音波画像を表示する表示手段と、を有して構成する。そして、取得時刻の異なる一対の超音波断層データに基づいて被検体の断層部位の複数の計測点における超音波断層データの相関値、又は相関値のばらつきを求め、これを閾値との比較で区分して組織間の境界画像30を生成し、超音波画像と共に表示手段に表示することを特徴とする。【選択図】図4
