PROBLEM TO BE SOLVED: To provide a photoacoustic imaging apparatus capable of inhibiting a photoacoustic signal from decreasing when using a light-emitting device such as a light-emitting diode element for a light source part and a detection frequency of a detection part is large.SOLUTION: A photoacoustic imaging apparatus 100 includes: a light source part 11 a detection part 12 that detects an acoustic wave A generated from a subject P caused by light applied from the light source part 11 to the subject P and a light source drive part 21 for supplying electric power to the light source part 11 to drive the light source part 11. The light source drive part 21 is configured to, as a detection frequency of the detection part 12 increases, increase a voltage value V of the electric power to be supplied to the light source part 11 such that a peak current value Ip of the electric power to be supplied to the light source part 11 becomes a setup peak current value Io.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】光源部に発光ダイオード素子等の発光素子を用いる場合で、かつ、検出部の検出周波数が大きい場合にも、光音響波信号が小さくなるのを抑制することが可能な光音響画像化装置を提供する。【解決手段】この光音響画像化装置100は、光源部11と、光源部11により被検体Pに光が照射されることに起因して被検体P内から発生する音響波Aを検出する検出部12と、光源部11に電力を供給して光源部11を駆動させる光源駆動部21とを備え、光源駆動部21は、光源部11に供給する電力のピーク電流値Ipが設定ピーク電流値Ioになるように、検出部12の検出周波数が大きいほど、光源部11に供給する電力の電圧値Vを大きくするように構成されている。【選択図】図1
