论文标题
通过辐射传输方程进行空间频率域成像的衰减行为和光学参数识别
Decay behavior and optical parameter identification for spatial-frequency domain imaging by the radiative transport equation
论文作者
论文摘要
研究了特定强度的衰减行为，用于空间频率域成像（SFDI）。使用辐射传输方程式显示，衰减是通过不同衰减模式的叠加给出的，这些模式的衰减速率由空间频率和案例的特征值确定。这解释了为什么SFDI可以专注于浅区域。非零空间频率迅速衰减的事实使得独家提取分层介质顶层的光学特性成为可能。我们确定固体幻影的顶层的光学特性。通过数值幻象的不同分层介质对此测量进行了验证。
The decay behavior of the specific intensity is studied for the spatial-frequency domain imaging (SFDI). It is shown using the radiative transport equation that the decay is given by a superposition of different decay modes, and the decay rates of these modes are determined by spatial frequencies and Case's eigenvalues. This explains why SFDI can focus on shallow regions. The fact that light with nonzero spatial frequency rapidly decays makes it possible to exclusively extract optical properties of the top layer of a layered medium. We determine optical properties of the top layer of a solid phantom. This measurement is verified with different layered media of numerical phantoms.
