Combination of diffuse reflectance and transmittance spectroscopy to obtain optical properties of liquid phantoms
Combination of diffuse reflectance and transmittance spectroscopy to obtain optical properties of liquid phantoms
复制标题
结合漫反射和透射光谱获得液体体模的光学特性
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
S. Andersson
中科院分区：
文献类型：
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作者：
Jacqueline E Gunther;Huihui Lu;S. Andersson
抽象的。我们提出了一种简单的光纤探针系统，可在任何实验室中使用，基于可见光/近红外区域的漫反射率和透射率测量，方便地确定液体模型的光学特性。我们采用蒙特卡罗模拟来确定最佳系统设置，并测试用于从测量的反射率和透射率中提取光学特性的逆算法。逆算法涉及获得光学特性范围内的值的拟合评价函数并确定最小值。该方法的性能通过预测误差进行了测试，并使用类似的牛奶墨水模型矩阵对反射率和透射率进行了验证。在μa的光学特性为0至0.5 cm − 1和μs的20至140 cm − 1的模型的光学特性范围内，测试模型在630 nm处的中值预测误差为μs的1.51％和μs的8.82％微安。预测值与预期值的中值差异为 1.15 cm − 1（μs）和 0.01 cm − 1（μa）。与其他技术相比，我们的方法是一种简单、快速、方便的确定液体模型光学特性的方法。
Abstract. We present a simple fiber-optics probe system that could be used in any lab for convenient determination of optical properties of liquid phantoms based on diffuse reflectance and transmittance measurements in the visible/near-infrared region. We employed Monte Carlo simulations to determine the optimal system setup and to test the inverse algorithm employed to extract the optical properties from measured reflectance and transmittance. The inverse algorithm involved obtaining the fit merit function for values within the optical property range and determining the minimum. The performance of the method was tested by predictive error and validated using similar matrix of milk–ink phantoms on reflectance and transmittance. In the range of optical properties of phantoms with optical properties of 0 to 0.5 cm − 1 for μa and 20 to 140 cm − 1 for μs, the median prediction error for the test phantoms at 630 nm was 1.51% for μs and 8.82% for μa. The median difference in predicted values versus expected values was 1.15 cm − 1 for μs and 0.01 cm − 1 for μa. In comparison with other techniques, our method was a simple, fast, and convenient way to determine optical properties of liquid phantoms.
影响因子：
6.1
作者：
WANG, LH;JACQUES, SL;ZHENG, LQ
通讯作者：
ZHENG, LQ