PROBLEM TO BE SOLVED: To provide an improved technology related to ultrasound transmission/reception control for obtaining a color flow image.SOLUTION: A scanning range BA for a B mode image is divided into a plurality of scanning areas (1) to (10), and division transmission/reception repeating transmission/reception every scanning area and transmission/reception with a region of interest ROI for color flow as a target by turns is performed. A control part determines a transmission/reception condition of the division transmission/reception on the basis of request speed information requested in a color flow image and controls division transmission/reception by the transmission/reception part according to the determined transmission/reception condition.SELECTED DRAWING: Figure 2【課題】カラーフロー画像を得るための超音波の送受信制御に係る改良技術を提供する。【解決手段】Ｂモード画像用の走査範囲ＢＡが複数の走査領域（１）～（１０）に分割され、各走査領域ごとの送受信と、カラーフロー用の関心領域ＲＯＩを対象とした送受信を交互に繰り返す分割送受信が実行される。制御部は、カラーフロー画像において要求される要求速度情報に基づいて分割送受信の送受信条件を決定し、決定された送受信条件に従って送受信部による分割送受信を制御する。【選択図】図２
