PROBLEM TO BE SOLVED: To obtain more accurate measurement results by correcting and standardizing an initial acoustic pressure acquired by photoacoustic measurement by using the in-plane distribution of a light intensity obtained by irradiating light to a probe.SOLUTION: An acoustic wave acquisition device is used which includes: a light source the probe that receives an acoustic wave and generates a reception signal and an information processing unit which obtains the spatial distribution of the light intensity on the surface of a subject, based on the in-plane distribution of the light intensity of the light source, obtained from the reception signal generated from the acoustic wave generated when the light source irradiates the light to the probe, and the surface shape of the subject, and calculates characteristics information of the subject from the reception signal, generated from the acoustic wave generated in the subject when the light source irradiates the light to the subject, and the spatial distribution of the light intensity.COPYRIGHT: (C)2013,JPO&INPIT【課題】光音響測定により取得された初期音圧を、探触子に光を照射して得られた光強度の面内分布を用いて補正・規格化することで、より正確な測定結果を得る。【解決手段】光源と、音響波を受信して受信信号を生成する探触子と、光源が探触子に光を照射したときに発生する音響波から生成される受信信号から求められる光源の光強度の面内分布と、被検体の表面形状とに基づいて被検体の表面における光強度の空間分布を求め、光源が被検体に光を照射したときに被検体で発生する音響波から生成される受信信号と、光強度の空間分布とから、被検体の特性情報を算出する情報処理部を有する音響波取得装置を用いる。【選択図】図2
