Correlation transfer equation for ultrasound-modulated multiply scattered light.
Correlation transfer equation for ultrasound-modulated multiply scattered light.
复制标题
超声调制多重散射光的相关传递方程。
DOI：
10.1103/physreve.74.036618
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Lihong V. Wang
中科院分区：
文献类型：
--
作者：
S. Sakadžić;Lihong V. Wang
本文建立了超声调制多重散射光的时间相关传输方程。该方程可用于获得在具有非均匀光学参数分布的光学散射介质中由非均匀超声场产生的随时间变化的光的比强度。我们还开发了一种蒙特卡罗算法，可以提供具有聚焦超声场的光学散射介质中光功率谱的空间分布，以及光学散射和吸收物体的非均匀分布。CTE的推导基于Bethe-Salpeter方程的梯形图近似，该方程假设中等超声压力。我们期望CTE适用于软生物组织的超声调制光学断层扫描中的广泛条件。
In this paper, we develop a temporal correlation transfer equation (CTE) for ultrasound-modulated multiply scattered light. The equation can be used to obtain the time-varying specific intensity of light produced by a nonuniform ultrasound field in optically scattering media that have a heterogeneous distribution of optical parameters. We also develop a Monte Carlo algorithm that can provide the spatial distribution of the optical power spectrum in optically scattering media with focused ultrasound fields, and heterogeneous distributions of optically scattering and absorbing objects. Derivation of the CTE is based on the ladder diagram approximation of the Bethe-Salpeter equation that assumes moderate ultrasound pressures. We expect the CTE to be applicable to a wide spectrum of conditions in the ultrasound-modulated optical tomography of soft biological tissues.