Single-scattering optical tomography: simultaneous reconstruction of scattering and absorption.
Single-scattering optical tomography: simultaneous reconstruction of scattering and absorption.
复制标题
单散射光学断层扫描：同时重建散射和吸收。
DOI：
10.1103/physreve.81.016602
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Schotland,JohnC
中科院分区：
文献类型：
--
作者：
Florescu,Lucia;Markel,VadimA;Schotland,JohnC
我们报告的理论和数值模拟表明，同时重建的三维散射和吸收系数的介观系统的散射光的角度分辨测量的可行性。图像重建是基于广义（破碎射线）的氡变换的散射和吸收系数的介质的角度分辨强度测量的逆。虽然辐射传输方程（RTE）的单散射近似用于设计图像重建方法，但没有假设仅测量单散射光。也就是说，没有用于将单次散射光子与多次散射光的其余部分分离的物理机制（例如，时间选通）被用于所提出的实验中。使用光学深度高达3.2的样本获得图像重建的数值例子。正演数据是从RTE的数值解中获得的，考虑了所有的散射阶数。
We report theory and numerical simulations that demonstrate the feasibility of simultaneous reconstruction of the three-dimensional scattering and absorption coefficients of a mesoscopic system using angularly resolved measurements of scattered light. Image reconstruction is based on the inversion of a generalized (broken ray) Radon transform relating the scattering and absorption coefficients of the medium to angularly resolved intensity measurements. Although the single-scattering approximation to the radiative transport equation (RTE) is used to devise the image reconstruction method, there is no assumption that only singly scattered light is measured. That is, no physical mechanism for separating single-scattered photons from the rest of the multiply-scattered light (e.g., time gating) is employed in the proposed experiments. Numerical examples of image reconstruction are obtained using samples of optical depth of up to 3.2. The forward data are obtained from numerical solution of the RTE, accounting for all orders of scattering.