MEASUREMENT OF THE OPTICAL-PROPERTIES OF THE SKULL IN THE WAVELENGTH RANGE 650-950 NM
MEASUREMENT OF THE OPTICAL-PROPERTIES OF THE SKULL IN THE WAVELENGTH RANGE 650-950 NM
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DOI：
10.1088/0031-9155/38/4/002
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发表时间：
1993-04-01
影响因子：
3.5
通讯作者：
DELPY, DT
中科院分区：
文献类型：
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作者：
FIRBANK, M;HIRAOKA, M;DELPY, DT
在650-950 nm波长范围内测量了猪头骨样品的光学性质。使用测角仪在薄骨样本上测量散射相函数，并计算散射角的平均余弦g的值。然后，通过逐步搜索漫反射率和透射率相对于mu（a）和mu（s）的表，从用一对积分球进行的漫反射率和透射率的测量中确定散射和吸收系数mu（s）和mu（a），所述漫反射率和透射率相对于mu（a）和mu（s）的表由结合测量的散射相函数的蒙特卡罗模型生成。在6个样品上测量的g值从650 nm处的0.925 +/- 0.014变化到950 nm处的0.945 +/- 0.013。在18个样品上测量的mu（a）和mu（s）的相应值为650 nm处的mu（a）= 0.04 +/- 0.002 mm-1，mu（s）= 35 +/- 0.7 mm-1至950 nm处的mu（a）= 0.05 +/- 0.002 mm-1，mu（s）= 24 +/- 0.6 mm-1。
The optical properties of samples of bone from pig skull have been measured over the wavelength range 650-950 nm. The scattering phase function was measured on thin samples of the bone using a goniometer, and a value for the mean cosine g, of the scattering angle, was calculated. The scattering and absorption coefficients, mu(s) and mu(a) were then determined from measurements of diffuse reflectance and transmittance made with a pair of integrating spheres, by a step-wise search through a table of diffuse reflectance and transmittance versus mu(a) and mu(s) generated by a Monte Carlo model incorporating the measured scattering phase function. Values for g measured on six samples varied from 0.925 +/- 0.014 at 650 nm to 0.945 +/- 0.013 at 950 nm. Corresponding values for mu(a) and mu(s) measured on 18 samples were mu(a) = 0.04 +/- 0.002 mm-1, mu(s) = 35 +/- 0.7 mm-1 at 650 nm to mu(a) = 0.05 +/- 0.002 mm-1, mu(s) = 24 +/- 0.6 mm-1 at 950 nm.