Compensation for image quality degradation due to the wavefront distortion of ultrasound imaging device, the adaptive signal processing while is a technique, I do accurately with a small amount of calculation. And receiving an ultrasonic wave signal from the subject by the element 106, and delaying each of the received signals in which a plurality of elements is received in accordance with the position of the predetermined reception focus by the delay circuit 204. Peripheral information calculation section 205, in the peripheral area of the receiving focus and receive focus, to get each of the information for a plurality of points from the delay after receiving signal. For example, we ask the adaptive weights corresponding to a plurality of steering angle. Area information synthesis unit 206, a plurality of information (the adaptive weights) were synthesized, to produce a phasing output using the synthesized information. Alternatively, the phased output after generation, is synthesized by using a plurality of adaptive weight and the received signal.超音波撮像装置の波面歪みによる画質劣化の補償を、適応信号処理の手法でありながら、少ない演算量で精度よく行う。 被検体からの超音波信号を素子106により受信し、所定の受信焦点の位置に応じて複数の素子が受信した受信信号を遅延回路204によりそれぞれ遅延させる。周辺情報演算部205は、受信焦点および受信焦点の周辺領域のうち、複数の点についての情報を遅延後受信信号からそれぞれ取得する。例えば、複数のステアリング角度に対応した適応重みを求める。周辺情報合成部206は、複数の情報(適応重み)を合成し、合成した情報を用いて整相出力を生成する。もしくは、複数の適応重みと受信信号とを用いて整相出力を生成後、合成する。
