PROBLEM TO BE SOLVED: To detect tissue boundaries of fat, muscles and soft tissue, etc., by using ultrasonic signals.SOLUTION: An ultrasonic diagnostic apparatus includes a vibration element 100, a transmission beam control part 110, a transmission beam formation part 111, a reception beam formation part 120, a display control part 121, a display part 122, a tissue information storage part 130, and a tissue boundary detection part 131. By setting a reception time range and a signal intensity range and defining a signal peak satisfying the reception time range and the signal intensity range as a tissue boundary, the tissue boundary is detected without using signals after delay addition.COPYRIGHT: (C)2013,JPO&INPIT【課題】超音波信号を用いて脂肪、筋肉、軟組織等の組織境界を検出すること。【解決手段】超音波診断装置は、振動素子100と、送信ビーム制御部110と、送信ビーム形成部111と、受信ビーム形成部120と、表示制御部121と、表示部122と、組織情報記憶部130と組織境界検出部131とを備え、受信時間範囲と信号強度範囲を設定し、前記受信時間範囲と前記信号強度範囲を満たす信号ピークを組織境界とすることにより、遅延加算後の信号を用いることなく組織境界検出が可能となる。【選択図】図1
