PROBLEM TO BE SOLVED: To evaluate appropriateness relating to measurement of a shear wave in an ultrasonic diagnostic device.SOLUTION: A shear wave measuring part 30 calculates propagation velocity of a shear wave in a subject on the basis of a received signal in a measurement period. A measurement evaluation part 40 obtains evaluation information for the measurement by the shear wave measuring part 30 on the basis of the received signals (or image data corresponding to the received signals) before and after the measurement period. The measurement evaluation part 40 derives, for example, both a displacement distribution of a tissue in the subject and a correlation coefficient distribution as evaluation information for the measurement. The measurement evaluation part 40 also determines whether or not the measurement by the shear wave measuring part 30 is appropriate, on the basis of the displacement distribution of the tissue and the correlation coefficient distribution.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】超音波診断装置においてせん断波の測定に係る妥当性を評価する。【解決手段】せん断波測定部30は、測定期間における受信信号に基づいて、被検体内におけるせん断波の伝搬速度を算出する。測定評価部40は、測定期間の前後における受信信号(又は受信信号に対応した画像データ)に基づいて、せん断波測定部30による測定の評価情報を得る。測定評価部40は、測定の評価情報として、例えば、被検体内における組織の変位分布と相関係数分布を導出する。また、測定評価部40は、組織の変位分布と相関係数分布に基づいて、せん断波測定部30による測定が妥当か否かを判定する。【選択図】図1
