PROBLEM TO BE SOLVED: To generate an ultrasound image having a good image quality around a puncture needle without deteriorating the image quality of the whole ultrasound image.SOLUTION: A first echo signal received by transmitting first ultrasonic waves focused on an imaging target position and a second echo signal received by transmitting second ultrasonic waves having the depth of the focal point positioned at a uniform position are obtained, the weights of the first echo signal and the second echo signal are determined according to the focal point positions of the respective ultrasonic waves, and weighted addition is performed to generate a corrected image.COPYRIGHT: (C)2012,JPO&INPIT【課題】超音波画像全体の画質を劣化させずに穿刺針周辺において画質が良い超音波画像を生成する。【解決手段】焦点の位置を撮像ターゲットの位置とした第一の超音波の送信を行って受信した第一のエコー信号と、焦点の深度を一様な位置とした第二の超音波の送信を行って受信した第二のエコー信号とを取得し、それぞれの超音波の焦点位置に応じて第一のエコー信号および第二のエコー信号の重みを決定し、重み付け加算して補正画像を生成する。【選択図】図3
