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    • 8. 发明申请
    • PHOTOACOUSTIC IMAGING APPARATUS AND METHOD THEREFOR
    • 摄影成像设备及其方法
    • WO2012144395A1
    • 2012-10-26
    • PCT/JP2012/059950
    • 2012-04-05
    • CANON KABUSHIKI KAISHAFUKUTANI, Kazuhiko
    • FUKUTANI, Kazuhiko
    • G01N29/24G01N21/17A61B5/00
    • A61B5/0095A61B5/02007A61B5/7485A61B2576/00G01N21/1702G01N29/2418G01N2291/02466
    • There is provided a specimen information acquisition apparatus for performing photoacoustic imaging and reconstruction of absorption coefficient maps that can obtain an image in which an influence of a local fluence distribution in a specimen is reduced. A signal processing apparatus includes a region extraction unit and an optical constant estimation unit. The region extraction unit extracts two or more regions that have a known absorption coefficient, from an optical characteristic value distribution of the specimen. The optical constant estimation unit estimates an optical constant of a background of the specimen by using optical characteristic values of the two or more regions extracted by the region extraction unit and a local fluence distribution obtained from an optical constant which is set in advance for the specimen background.
    • 提供了一种用于执行光声成像和重建吸收系数图的样本信息获取装置,其可以获得其中减少样本中局部注量分布的影响的图像。 信号处理装置包括区域提取单元和光学常数估计单元。 区域提取单元根据样本的光学特性值分布提取具有已知吸收系数的两个以上的区域。 光学常数估计单元通过使用由区域提取单元提取的两个或更多个区域的光学特性值和从针对样本预先设定的光学常数获得的局部注量分布来估计样本背景的光学常数 背景。