Center for Optical Diagnostics and Therapy, Department of Radiation Oncology, Erasmus Medical Center, Rotterdam, The Netherlands.
Opt Lett. 2011 Aug 1;36(15):2997-9. doi: 10.1364/OL.36.002997.
This study utilizes experimentally validated Monte Carlo simulations to identify a mathematical formulation of the reflectance intensity collected by a single fiber probe expressed in terms of the reduced scattering coefficient (μs'), fiber diameter d(fiber), and a property of the first two moments of the scattering phase function (γ). This model is then utilized to accurately obtain wavelength-dependent estimates of μs'(λ) and γ(λ) from multiple single fiber spectral measurements of a turbid medium obtained with different diameters. This method returns accurate descriptions (mean residual <3%) of both μs' and γ across the biologically relevant range.
本研究利用经过实验验证的蒙特卡罗模拟,确定了单纤维探针收集的反射强度的数学表达式,其涉及到散射系数(μs')、纤维直径 d(fiber) 和散射相位函数前两个矩的一个特性(γ)。然后,利用该模型从不同直径的混浊介质的多个单纤维光谱测量中,准确获得了波长相关的μs'(λ)和γ(λ)的估计值。该方法能够准确描述整个生物相关范围内的μs'和γ(平均残余<3%)。