本文利用漫射近似理论,推导了组织表面的空间分辨局部漫反射光的稳态解析式,然后利用人体结肠组织的两组典型光学特性参数,给出了漫射近似的计算结果,并与用蒙特卡洛仿真结果进行了比较.结果表明,漫射近似理论的成立是有条件的.通过采用一种修正的简化漫射方程,对漫反射光成功地进行了拟合,可用于组织光学特性参数的间接测量.
参考文献
| [1] | Ishimaru A. Wave Propagation and Scattering in Random Media [M]. New York: Academic Press, 1978. 1 |
| [2] | Lindquist C, Pifferi A, Berg R et al. Reconstruction of diffuse photon-density wave interference in turbid media from time-resolved transmittance measurements [J]. Appl. Phys. Lett., 1996, 69:1674-1676 |
| [3] | Keijzer M, Star W M, Storchi P R M. Optical diffusion in layered media [J]. Appl. Opt., 1988, 27(9): 1820-1824 |
| [4] | Schmitt J M, Zhou G X, Walker E C et al. Multilayer model of photon diffusion in skin [J]. J. Opt. Soc. Am. A,1990, 7:2141-2153 |
| [5] | Svaasand L. O, Norvang L T, Fiskerstrand E J et al. Tissue parameters determining the visual appearance of normal skin and port-wine stains [J]. Laser Med. Sci., 1995, 10:55-65 |
| [6] | Farrell T J, Patterson M S, Wilson B. A diffusion theory model of spatially resolved, steady-state diffuse reflectance for noninvasive determination of tissue optical properties in vivo [J]. Med. Phy., 1992, 19(7): 879-888 |
| [7] | 张阳德,唐贵林,刘蔚东等.大肠正常组织和癌组织的显微自体荧光差异研究[J].中国激光医学杂志,2001,10(4):205-208 |
| [8] | Huang Z, Chia T, Lee S et al . Laser-induced fluorescence spectrum of human colonic tissues by Monte Carlo modeling [C] //SPIE, 2000, Proc. 3917:139-145 |
| [9] | Zonios G I, Cothern R M, Arendt J.T et al. Morphological Model of Human Colon Tissue Fluorescence [J]. IEEE Trans. Biomed. Eng., 1996, 43(2): 119-122 |
| [10] | Andersen P.E, Dam J.S, Petersen P.M et al. Local diffuse reflectance from three-layered skin tissue structurcs [C]//SPIE, 1997, Proc. 2979:515-526 |
| [11] | Wang L, Jacques S.L, Zheng L. MCML-Monte Carlo modeling of light transport in multi-layered tissues [J].Computer Methods and Programs in Medicine, 1995, 47:131-146 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%