PROBLEM TO BE SOLVED: To provide a technology to improve image quality in acquiring characteristic information based on a photoacoustic wave generated from a subject held by a holding member.SOLUTION: A subject information acquisition device includes a holding member for holding a subject, a plurality of acoustic wave detectors for detecting an acoustic wave emitted from the subject irradiated with pulse light, and outputting a reception signal, a low-pass filter for attenuating a high frequency component of the reception signal, low-pass filter determination means for determining filtering characteristics based on the thickness of the holding member and acoustic velocity of a transverse wave, reception signal conversion means for converting the reception signal using the determined filtering characteristics, and signal processing means for generating characteristic information on the subject. The signal processing means uses a subject information acquisition device for generating the characteristic information using the reception signal of the acoustic wave.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】保持部材により保持された被検体から発生する光音響波に基づいて特性情報を取得する際の画質を向上させる技術を提供する。【解決手段】被検体を保持する保持部材と、パルス光を照射された被検体から発せられた音響波を検出して受信信号を出力する複数の音響波検出器と、受信信号の高周波成分を減衰させるローパスフィルタと、保持部材の厚さおよび横波の音速に基づきフィルタリング特性を決定するローパスフィルタ決定手段と、決定されたフィルタリング特性を用いて受信信号を変換する受信信号変換手段と、被検体の特性情報を生成する信号処理手段を有し、信号処理手段は、音響波の伝受信信号を用いて特性情報を生成する被検体情報取得装置を用いる。【選択図】図１
