■对扩散反射(DR)行为的更好理解可能会使其用于更多的非侵入性应用,包括体内无损技术的发展,特别是医疗局部诊断和治疗。
■对于上层的衰减大于下层的衰减的双层不透明物质,DR交叉点(Cp)是来自底层的光子开始影响DR的位置。我们旨在研究Cp对恒定散射和顶层厚度的不同层中吸收变化的依赖性。
■制备和使用DR系统测量单层和双层光学组织样体模。将结果与蒙特卡罗模拟进行比较。
■实验和模拟之间是一致的。Cp与下层与顶层的吸收系数比的平方根相关。
■实验结果支持并验证了描述Cp对层吸收系数之比的平方根的依赖性的理论预测。此外,建议在噪声区域的入口处通过实验观察到第二个断裂点。
UNASSIGNED: A better understanding of diffusion reflection (DR) behavior may allow it to be used for more noninvasive applications, including the development of in vivo non-damaging techniques, especially for medical topical diagnosis and treatments.
UNASSIGNED: For a bilayer opaque substance where the attenuation of the upper layer is larger than the attenuation of the lower layer, the DR crossover point ( C p ) is location where the photons coming from the bottom layer start affecting the DR. We aim to study the dependency of the C p on absorption changes in different layers for constant scattering and top layer thickness.
UNASSIGNED: Monolayer and bilayer optical tissue-like phantoms were prepared and measured using a DR system. The results were compared with Monte Carlo simulations.
UNASSIGNED: There is an agreement between the experiments and the simulations. C p correlates with the square root of the absorption coefficient ratio of the lower layer to the top layer.
UNASSIGNED: The experimental findings support and validate the theoretical prediction describing the dependency of the C p on the square root of the ratio of the layers\' absorption coefficients. In addition, a secondary breaking point is suggested to be observed experimentally at the entrance to the noise area.