Problem to be solved: to perform an image based on the acoustic wave generated by the light irradiated to the subject and the ultrasonic wave reflected and reflected on the subject.In the photoacoustic imaging apparatus, the control section controls the switch section to connect the detection section and the amplification section during the period in which the acoustic wave is detected, and sets the gain of the amplification section to the first gain, and (b) irradiates the ultrasonic wave During the period, the switch section is controlled to shut off between the detecting section and the amplifying section, the driving signal for generating the ultrasonic wave is supplied to the detection section, the gain of the amplifying section is set to the second gain, and (c) during the period in which the reflected wave is detected, the switch is switched DepartmentThe control section and the amplifying section are connected to each other, and the gain of the amplifying section is set to the third gain. In the amplifier section, the second gain is set to be smaller than the first gain and the third gain.Diagram【課題】被検体に照射された光により発生する音響波と被検体に照射され反射された超音波に基づく画像化を良好に行うこと。【解決手段】光音響画像化装置において、制御部は、(a)音響波を検出させる期間には、スイッチ部を制御して検出部と増幅部の間を接続させるとともに、増幅部の利得を第1利得に設定し、(b)超音波を照射させる期間には、スイッチ部を制御して検出部と増幅部の間を遮断させるとともに、超音波を発生させるための駆動信号を検出部に供給し、かつ増幅部の利得を第2利得に設定し、(c)反射波を検出させる期間には、スイッチ部を制御して検出部と増幅部の間を接続させるとともに、増幅部の利得を第3利得に設定する。増幅部において、第2利得は、第1利得及び第3利得よりも相対的に小さく設定される。【選択図】図3
