PROBLEM TO BE SOLVED: To improve measurement accuracy of a subject information acquisition device that performs both photoacoustic measurement and ultrasonic measurement.SOLUTION: A subject information acquisition device includes: light irradiation means 103 a photoacoustic wave probe 104 for acquiring a photoacoustic wave signal corresponding to a photoacoustic wave an ultrasonic probe 105 for transmitting an ultrasonic wave to a subject and acquiring an ultrasonic signal scanning means 112 for scanning the photoacoustic wave probe and the ultrasonic probe control means for performing first measurement for light irradiation and acquisition of the photoacoustic wave signal by the light irradiation means and the photoacoustic wave probe, and second measurement for transmission of the ultrasonic wave and acquisition of the ultrasonic signal by the ultrasonic probe and signal processing means 108 and 109 for generating information in the subject based on the acquired signal. The control means performs the second measurement at a timing at which the first measurement is not performed, and controls the timing of the first and second measurements so that the ultrasonic signal corresponding to the location of the ultrasonic probe at the time when the first measurement is performed is acquired in the second measurement.COPYRIGHT: (C)2015,JPO&INPIT【課題】光音響測定と超音波測定の双方を行う被検体情報取得装置において、測定の精度を向上させる。【解決手段】光照射手段103と、光音響波に対応する光音響波信号を取得する光音響波探触子104と、被検体に対して超音波を送信し、超音波信号を取得する超音波探触子105と、光音響波探触子および超音波探触子を走査させる走査手段112と、光照射手段および光音響波探触子によって光の照射と光音響波信号の取得を行う第一の測定と、超音波探触子によって超音波の送信と超音波信号の取得を行う第二の測定とを行う制御手段と、取得した信号に基づいて被検体内の情報を生成する信号処理手段108、109と、を有し、制御手段は、第一の測定を実施していないタイミングにおいて第二の測定を実施し、第一の測定を行った際の超音波探触子の位置に対応する超音波信号を、第二の測定において取得するように、第一および第二の測定のタイミングを制御する。【選択図】図1
