PROBLEM TO BE SOLVED: To provide a photoacoustic device which obtains information with respect to blood flow in a photoacoustic tomography.SOLUTION: A photoacoustic device comprises: a light source which irradiates a subject with light a plurality of acoustic wave detectors which receives acoustic wave generated in the subject caused by the light and converts it into electric signal to output and information acquisition means which acquires information in the subject on the basis of the electric signal. The information acquisition means acquires intensity change of the electric signal for each of the acoustic wave detectors after irradiating the subject into which a contrast medium is injected with the light resolving the contrast medium, and acquires information with respect to blood flow in the subject on the basis of the intensity change of the electric signal.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】光音響トモグラフィにおいて血流に関する情報を取得する。【解決手段】被検体に光を照射する光源と、前記光に起因して前記被検体内で発生した音響波を受信し、電気信号に変換して出力する複数の音響波検出器と、前記電気信号に基づいて、前記被検体内の情報を取得する情報取得手段と、を有し、前記情報取得手段は、造影剤が注入された被検体に対して、前記造影剤を分解する光を照射した後の、前記電気信号の強度変化を前記音響波検出器ごとに取得し、前記電気信号の強度変化に基づいて、前記被検体内の血液流に関する情報を取得することを特徴とする。【選択図】図1
