As for the ultrasonic diagnostic device of this invention, the transmission section and the aforementioned ultra wave which drive the ultrasonic probe in order to transmit the ultra wave to the measurement territory of the suffering inspection body which includes the artery blood vessel wall the reflected wave which is obtained by reflecting in the aforementioned suffering inspection body, is received making use of the aforementioned ultrasonic probe, the reception section and the aforementioned reception signal which form the reception signal are analyzed, the plural organizations which are included in the aforementioned blood vessel wall in the portable sensing station and the aforementioned measurement territory which the portable quantity of each measurement point inside the measurement territory of the aforementioned blood vessel wall is calculated, one boundary is decided at least,It has with the indicatory organizational decisive section which at least selects one territory from two which is divided, by the boundary which is decided territories and the quality value calculation section which calculates the quality value of the aforementioned suffering inspection body from the portable quantity of the aforementioned each measurement point, it indicates the distribution of quality value of the measurement point which is included in the territory where it is selected by the aforementioned indicatory organizational decisive section with two dimensional picture.本発明の超音波診断装置は、動脈血管壁を含む被検体の計測領域へ超音波を送信するための超音波探触子を駆動する送信部と、前記超音波が前記被検体において反射することにより得られる反射波を、前記超音波探触子を用いて受信し、受信信号を生成する受信部と、前記受信信号を解析し、前記血管壁の計測領域内の各計測点の移動量を求める移動検出部と、前記計測領域において、前記血管壁に含まれる複数の組織の少なくとも1つの境界を決定し、決定した境界により分けられる少なくとも2つの領域から1つの領域を選択する表示組織決定部と、前記各計測点の移動量から前記被検体の特性値を算出する特性値算出部とを備え、前記表示組織決定部により選択された領域に含まれる計測点の特性値の分布を二次元画像で表示する。
