PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus and an ultrasonic image generation method that can generate an ultrasonic diagnostic image of good image quality while preventing deterioration in beam formation performance in an adaptive beamformer.SOLUTION: An ultrasonic diagnostic apparatus includes: a structure extraction unit 43 for extracting a feature tissue signal based on a reflection ultrasonic wave from a tissue that returns a reflection ultrasonic wave reflecting a tissue shape in each of a plurality of reception signals generated by a plurality of vibrators 1 that receive a reflection ultrasonic wave from a subject； a control data generation unit 44 for generating temporal second delay data for each of the reception signals on the basis of a temporal deviation of each reception signal in a corresponding part that corresponds to each other among the feature tissue signals in the plurality of reception signals； and an adaptive phasing addition unit 46 for generating sound ray data by performing phasing addition on the basis of the plurality of reception signals corrected by using the second delay data； and a signal processing unit 5 for generating an ultrasonic diagnostic image on the basis of the sound ray data.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】適応型ビームフォーマーにおけるビーム形成性能の劣化を防止し、画質のよい超音波診断画像を生成できる超音波診断装置および超音波画像生成方法を提供する。【解決手段】被検体からの反射超音波を受信する複数の振動子１が生成する複数の受信信号のそれぞれにおいて、組織の形状を反映した反射超音波を返す組織からの反射超音波に基づく特徴組織信号を抽出する構造体抽出部４３と、複数の受信信号における特徴組織信号の間で互いに対応する対応部分の受信信号毎の時間的なずれに基づいて、受信信号毎の時間的な第２遅延データを生成する制御データ生成部４４と、第２遅延データを用いて補正された複数の受信信号に基づいて整相加算を行って音線データを生成する適応整相加算部４６と、音線データに基づき超音波診断画像を生成する信号処理部５と、を有する。【選択図】図３
