PROBLEM TO BE SOLVED: To provide an ultrasound diagnostic apparatus and an ultrasound image producing method capable of efficiently obtaining data for producing a B mode image and data for measuring the sound speed to achieve production of both a B mode image and a sound speed map.SOLUTION: Transmission focuses are formed at lattice points E in a region of interest R to preferentially obtain reception data for measuring a sound speed, transmission focuses are formed at points F located at a given depth L set on each of sound rays S1-S7 during producing of a sound speed map in the region of interest R based on the obtained reception data for measuring a sound speed to obtain reception data for producing a B mode image, and both the B mode image and the sound speed map are produced.COPYRIGHT: (C)2012,JPO&INPIT【課題】Bモード画像生成用のデータと音速測定用のデータを効率よく取得してBモード画像の生成と音速マップの生成の双方を行うことができる超音波診断装置を提供する。【解決手段】関心領域R内の格子点Eに送信焦点を形成して音速測定用の受信データを優先的に取得し、取得された音速測定用の受信データに基づいて関心領域R内の音速マップの生成を実行している間に、各音線S1~S7上の所定の深度Lに位置する点Fに送信焦点を形成してBモード画像生成用の受信データを取得し、Bモード画像の生成と音速マップの生成の双方が行われる。【選択図】図3
