组织的特征长度微距空间分辨漫反射

被引:2
作者
张小娟
刘迎
机构
[1] 天津大学理学院物理系光电信息技术教育部重点实验室
关键词
特征长度; P3近似; 微距空间分辨漫反射; 散射相函数;
D O I
10.16136/j.joel.2005.01.030
中图分类号
R318.51 [光、激光生物医学];
学科分类号
摘要
从辐射传输理论的相似关系出发,根据P1近似和P3近似满足的一阶和三阶相似关系,引入了特征长度的参量。利用半无限介质的空间分辨漫反射的P3的近似解,对光源附近组织的空间分辨漫反射与特征长度之间的关系进行了研究。研究表明,当需要在光源附近对组织进行测量时,最近的距离与描述该组织的特征长度有关,根据组织的特征长度可以确定探测器的大致宽度,并结合实际光纤直径估计测量光纤的数目。
引用
收藏
页码:124 / 128
页数:5
相关论文
共 10 条
  • [1] Correlation between blood-glucose concentration in diabetics and noninvasively measured tissue optical-scattering coefficient. Bruulsema J T,Hayward J E,Farrel T J,et al. Optics Letters . 1997
  • [2] Method for measuring positiondependent volume reflection. Bolt R A,Ten Bosch J J. Applied Optics . 1993
  • [3] Spatially resolved absolute diffuse reflectance measurements for noninvasive determination of the optical scattering and absorption coefficients of biological tissue. Kienle A,Lilge L,Patterson M S,et al. Applied Optics . 1996
  • [4] In vivo local determination of tissue optical properties: application to human brain. Bevilacqua F,Piguet D,Marquet P,et al. Applied Optics . 1999
  • [5] Monte Carlo study of diffuse reflectance at source-detector separations close to one transport mean free path. Bevilacqua F,Depeursinge C. Journal of the Optical Society of America A Optics Image Science and Vision . 1999
  • [6] Wavepropagationandscatteringinrandommedia. IshimaruA,,HuangRunheng,ZhouShijian. . 1986
  • [7] Stead-state reflectance spectroscopy in the P 3 approximation. Hull E L,Foster T H. Journal of the Optical Society of America A Optics Image Science and Vision . 2001
  • [8] Simple photon diffusion analysis of the effects of multiple scattering on pulse oximetry. Schmitt J M. IEEE Transactions on Biomedical Engineering . 1991
  • [9] Influence of the scattering phase function on light transport measurements in turbid media performed with small source-detector separations. Mourant J R,Boyer J,Hielscher A H,et al. Optics Letters . 1996
  • [10] In vivo endoscopic tissue diagnostics based on spectroscpic absorption, scattering, and phase function properties. Thueler P,Charvet I,Bevilacqua F,et al. Journal of Biomedical Optics . 2003