PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus which can be controlled in accordance with detailed movement of a probe.SOLUTION: An ultrasonic diagnostic apparatus includes: a reception part 20 generating a reception signal on the basis of ultrasonic waves reflected on a subject 18 and received by a probe 14 a reception range detection part 74 detecting a reception range where ultrasonic waves are received, of a subject contact surface having the probe 14, on the basis of the reception signal and a contact determination part 42 determining whether or not the probe 14 gets in touch with the subject 18. The contact determination part 42 obtains an approximation degree between a part corresponding to the reception range of prescribed reference data and a part corresponding to a reception range of received data obtained from the reception signal, and determining whether or not the probe 14 gets in touch with the subject 18 on the basis of the approximation degree.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2017,JPO&INPIT【課題】探触子の詳細な動きに応じて超音波診断装置を制御することができる装置を提供する。【解決手段】超音波診断装置は、被検体18で反射し探触子14で受信された超音波に基づく受信信号を生成する受信部20と、探触子14が有する被検体接触面のうち、超音波が受信された受信範囲を受信信号に基づいて検出する受信範囲検出部74と、探触子14が被検体18に接触しているか否かを判定する接触判定部42と、を備える。接触判定部42は、予め定められた基準データのうちの受信範囲に対応する部分と、受信信号から得られる受信データのうちの受信範囲に対応する部分との近似度を求め、その近似度に基づいて、探触子14が被検体18に接触しているか否かを判定する。【選択図】図7
