Center for Advanced Biomedical Imaging and Photonics, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard University and Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA.
Nat Commun. 2011 Dec 13;2:587. doi: 10.1038/ncomms1599.
From astronomy to cell biology, the manner in which light propagates in turbid media has been of central importance for many decades. However, light propagation near the point-of-entry in turbid media has never been analytically described, until now. Here we report a straightforward and accurate method that overcomes this longstanding, unsolved problem in radiative transport. Our theory properly treats anisotropic photon scattering events and takes the specific form of the phase function into account. As a result, our method correctly predicts the spatially dependent diffuse reflectance of light near the point-of-entry for any arbitrary phase function. We demonstrate that the theory is in excellent agreement with both experimental results and Monte Carlo simulations for several commonly used phase functions.
从天文学到细胞生物学，几十年来，光在混浊介质中的传播方式一直是研究的核心。然而，直到现在，混浊介质中近入口处的光传播仍未得到解析描述。在这里，我们报告了一种直截了当且准确的方法，克服了辐射传输中这一长期存在的未解决问题。我们的理论正确处理各向异性光子散射事件，并考虑相位函数的具体形式。因此，我们的方法可以正确预测任意相位函数下近入口处光的空间相关漫反射。我们证明，该理论与几种常用相位函数的实验结果和蒙特卡罗模拟吻合得非常好。
