PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus which can highly accurately calculate blood flow velocity by improving irregularity in calculated values of blood flow velocity due to speckle noise.SOLUTION: An ultrasonic diagnostic apparatus generates a plurality of kinds of pulse signals for making a probe transmit an ultrasonic beam connecting focal points at mutually-different depth positions in an analyte to sequentially transmit them to the probe, generates a plurality of kinds of reception signals in accordance with the plurality of kinds of pulse signals, calculates the blood flow velocity on the basis of the plurality of kinds of reception signals, and displays distribution of the calculated blood flow velocity in an observation area.COPYRIGHT: (C)2015,JPO&INPIT【課題】スペックルノイズによる血流速度の算出値の乱れを改善し血流速度を高精度に算出可能な超音波診断装置を提供する。【解決手段】被検体内の互いに異なる深さ位置に焦点を結ぶ超音波ビームをプローブに送波させる複数種類のパルス信号を生成してプローブに順次に送信し、複数種類のパルス信号に応じた複数種類の受信信号を生成し、それら複数種類の受信信号に基づいて血流速度を算出し、その算出された血流速度の、観察領域内の分布を表示する。【選択図】図5
