PROBLEM TO BE SOLVED: To provide a subject information acquisition apparatus capable of performing aperture synthesis with high accuracy even when the number of channels of a transmission/reception circuit is small.SOLUTION: A subject information acquisition apparatus 1 comprises: a probe 2 which sends an acoustic wave to a subject E by an opening composed of a plurality of elements, and performs electronic scan by receiving a reflection wave of the acoustic wave within the subject and outputting a reception signal a processing unit 5 which acquires characteristic information within the subject E by using the reception signal and a scanning unit 60 which moves the position of the probe 2 with respect to the object E in a first direction and a second direction crossing the first direction. The probe 2 performs the electronic scan while moving in the first direction. The scanning unit 60 moves the probe 2 in the same direction as the first direction plural times. The processing unit 5 acquires the characteristic information by aperture synthesis using the reception signal obtained by the electronic scan in the plurality of movements in the same direction.COPYRIGHT: (C)2015,JPO&INPIT【課題】送受信回路のチャンネル数が少ない場合でも、開口合成を高精度で行うことが可能な被検体情報取得装置を提供する。【解決手段】複数の素子で構成される開口により被検体Eに音響波を送信し、当該音響波の被検体内での反射波を受信して受信信号を出力して電子走査を行う探触子2と、受信信号を用いて被検体内の特性情報を取得する処理部5と、探触子2の被検体Eに対する位置を、第1の方向と、第1の方向と交差する第2の方向とに移動させる走査部60と、を有し、探触子2は、第1の方向において移動しながら電子走査を行い、走査部60は、探触子2を第1の方向における同じ向きに複数回移動させ、処理部5は、同じ向きの複数回の移動における電子走査により得られた受信信号を用いた開口合成により特性情報を取得する被検体情報取得装置1。【選択図】図1
