A direct scattering optical coherence tomography forward model was developed to simulate A-scans for both idealized and real light sources on an arbitrary given sample structure. Previous models neglected absorption, scattering, and multiple reflections at interfacial layers, and so two extended models were developed to investigate the impact of these processes. The first model uses the Beer-Lambert law to incorporate both absorption and scattering optical processes, and the second model uses a recursive form to model multiple reflections. These models were tested on a structure representative of a multilayered skin sample. The results show that the absorption and scattering processes have significant impact on the height of the peaks in the simulated A-scans. Conversely, the incorporation of multiple reflections has very little impact on the height of these peaks. Neither of the above processes has any impact on the locations of the A-scan peaks, which are associated with the sample interfaces between layers.

中文翻译：

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光学相干断层扫描建模，包含散射，吸收和多次反射。

开发了直接散射光学相干断层扫描正向模型，以在任意给定的样本结构上模拟理想和实际光源的A扫描。先前的模型忽略了界面层的吸收，散射和多重反射，因此开发了两个扩展模型来研究这些过程的影响。第一个模型使用比尔-朗伯定律来合并吸收和散射光学过程，第二个模型使用递归形式来建模多次反射。这些模型在代表多层皮肤样品的结构上进行了测试。结果表明，吸收和散射过程对模拟A扫描中峰的高度有显着影响。反过来，多次反射的结合对这些峰的高度影响很小。以上两个过程均不会影响与层之间的样品界面相关的A扫描峰的位置。