PROBLEM TO BE SOLVED: To prevent the load on an examinee from increasing when the time for mechanical scanning of an acoustic wave receiver increases.SOLUTION: A target speed at which an acoustic wave receiver is caused to move for the measurement of an acoustic wave is calculated, using data of an emission period of pulsed light and data of an interval between target measurement positions in the examinee, the acoustic wave receiver is caused to move so as to reach an initial target measurement position at the target speed at a time when initial pulsed light for measuring the acoustic wave is emitted, and the acoustic wave receiver is caused to move at a uniform speed which is equal to the target speed after the target speed has been reached.COPYRIGHT: (C)2011,JPO&INPIT【課題】 音響波受信器の機械走査が長くなると、被験者の負担が大きくなる。【解決手段】 パルス光の発生周期のデータと被検体の目標測定位置間隔のデータとを用いて、音響波の測定の際に音響波受信器を移動させる目標速度を計算し、音響波を測定する最初のパルス光が発生する時刻に前記目標速度で最初の目標測定位置に達するように、前記音響波受信器を移動させ、前記目標速度に達した後は前記目標速度で等速移動をさせる。【選択図】 図1
