PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus which can achieve both improvement in temporal resolution and improvement in spatial resolution.SOLUTION: An ultrasonic diagnostic apparatus comprises a reception part 12, a correction part 132, a synthesis part 133 and an image generation part 16. The reception part 12 outputs a plurality of reception signals corresponding to a plurality of reception scan lines respectively for each transmission and reception of an ultrasonic wave by an ultrasonic probe 1. The correction part 132 outputs a processed signal for each reception scan line by executing weighting processing and phase correction processing in accordance with the position of the reception scan line with respect to the plurality of reception signals or at least one of the plurality of signals on the basis of the plurality of reception signals. The synthesis part 133 outputs a plurality of composite signals using the plurality of processed signals output by the correction part 132 in accordance with transmission and reception of the ultrasonic wave before and after the change in the acoustic field of the transmitted ultrasonic wave and before and after the change in the positions of the plurality of reception scan lines. The image generation part 16 generates image data on the basis of the plurality of composite signals output by the synthesis part 133.COPYRIGHT: (C)2016,JPO&INPIT【課題】時間分解能の向上と空間分解能の向上とを両立させる超音波診断装置を提供する。【解決手段】超音波診断装置は、受信部12、補正部132、合成部133及び画像生成部16とを備える。受信部12は、超音波プローブ1による超音波の送受信毎に、複数の受信走査線それぞれに対応する複数の受信信号を出力する。補正部132は、複数の受信信号又は複数の受信信号に基づく複数の信号の少なくとも一つに対して、受信走査線の位置に応じた重み付け処理および位相補正処理を実行し、受信走査線毎の処理済み信号を出力する。合成部133は、送信される超音波の音場の変更前後および複数の受信走査線の位置の変更前後の超音波の送受信に応じて補正部132が出力した複数の処理済み信号を用いて複数の合成信号を出力する。画像生成部16は、合成部133が出力した複数の合成信号に基づいて画像データを生成する。【選択図】図1
