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    • 5. 发明授权
    • Phase subtraction cell counting method
    • 相减细胞计数法
    • US08428331B2
    • 2013-04-23
    • US11890801
    • 2007-08-07
    • Charles A. DiMarzioWilliam C. Warger, II
    • Charles A. DiMarzioWilliam C. Warger, II
    • G06K9/00
    • G02B21/0004G02B21/18
    • A method and device are provided for counting cells in a sample of living tissue, such as an embryo. The method involves obtaining a microscopic image of the unstained tissue that reveals cell boundaries, such as a differential interference contrast (DIC) image, and an optical quadrature microscopy (OQM) image which is used to prepare an image of optical path length deviation (OPD) across the cell cluster. The boundaries of individual cells in the cell cluster are modeled as ellipses and used, together with the maximum optical path length deviation of a cell, to calculate ellipsoidal model cells that are subtracted from the OPD image. The process is repeated until the OPD image is depleted of phase signal attributable to cells of the cell cluster, and the cell count is obtained from the number of cells subtracted. The method is capable of accurately and non-invasively counting the number of cells in a living embryo at the 2-30 cell stage, and can be employed to assess the developmental stage and health of human embryos for fertility treatments.
    • 提供了一种用于计数诸如胚胎的生物体组织样品中的细胞的方法和装置。 该方法包括获得显示细胞边界的未染色组织的微观图像,例如差分干涉对比(DIC)图像和用于准备光程长度偏差图像(OPD)的光学正交显微镜(OQM)图像 )。 细胞簇中的单个细胞的边界被建模为椭圆并与细胞的最大光程长度偏差一起使用,以计算从OPD图像中减去的椭圆体模型细胞。 重复该过程直到OPD图像耗尽归因于细胞簇的细胞的相位信号,并且从减去的细胞数获得细胞计数。 该方法能准确,非侵入性地计数2-30细胞期活细胞中的细胞数,可用于评估人胚胎发育阶段和健康状况,用于生殖治疗。