PROBLEM TO BE SOLVED: To further reduce an operation amount of the displacement of a probe than the conventional one.SOLUTION: A diagnostic ultrasound imaging system is configured to use ultrasonic reception beams, which are formed by a transmission/reception part 2 in directions intersecting with each other in a predetermined period of time t1 and obtained so as to include a target tissue in a subject, and ultrasonic reception beams, which are formed in directions intersecting with each other in a period of time t2 different from the predetermined period of time t1 and obtained so as to include the target tissue in the subject, in order to calculate the displacement of a probe by obtaining vectors along in the center line directions of a plurality of ultrasonic beams and carrying out an operation to synthesize the obtained vectors.COPYRIGHT: (C)2013,JPO&INPIT【課題】 探触子の変位の演算量を従来よりも少なくする。【解決手段】 送受信部2によって所定の時間t1での互いに交差する方向に形成し被検体内の注目する組織を含むように得る超音波受信ビームと、所定の時間t1と異なる時間t2での互いに交差する方向に形成し前記被検体内の注目する組織を含むように得る超音波受信ビームとを用いて、探触子の変位を算出するため、複数の超音波ビームの中心線方向に沿ったベクトルを求めて、求めたベクトルを合成する演算を行う。【選択図】 図4
