PROBLEM TO BE SOLVED: To provide a subject information acquisition device by which a photoacoustic signal that is generated in a subject with a high degree of precision.SOLUTION: A subject information acquisition device includes: a support member for a person to be examined, provided with an opening into which a subject, which is a part of a person to be examined, is inserted a light irradiation part for irradiating light to the subject inserted ino the opening a holding member arranged between the subject and the light irradiation part for holding the subject a scanning mechanism that moves the light irradiation part along a first axis parallel to the subject insertion direction a probe for receiving an acoustic wave generated due to the light irradiated to the subject a processing part for generating characteristic information of the subject from the acoustic wave received by the probe and a control part for determining the position of the light irradiation part with respect to the holding member based on the position of the holding member and the emission direction of the light emitted from the light irradiation part, and moving the light irradiation part to the determined position using the scanning mechanism.COPYRIGHT: (C)2014,JPO&INPIT【課題】被検体内で発生する光音響信号を精度よく取得できる被検体情報取得装置を提供する。【解決手段】被検者の一部である被検体を挿入する開口部を備える被検者支持部材と、前記開口部に挿入された被検体に光を照射する光照射部と、前記被検体と前記光照射部との間に配置され、前記被検体を保持する保持部材と、前記光照射部を、被検体の挿入方向に対して平行な第一の軸に沿って移動させる走査機構と、前記被検体に照射された光に起因して発生する音響波を受信する探触子と、前記探触子で受信した音響波から前記被検体の特性情報を生成する処理部と、前記保持部材に対する前記光照射部の位置を、前記保持部材の位置と、前記光照射部から出射する光の出射方向に基づいて決定し、前記決定した位置に前記走査機構を用いて前記光照射部を移動させる制御部と、を有することを特徴とする。【選択図】図1
