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首页> 外文期刊>Biomedical Optics Express >Quantitative comparison of contrast and imaging depth of ultrahigh-resolution optical coherence tomography images in 800–1700 nm wavelength region
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Quantitative comparison of contrast and imaging depth of ultrahigh-resolution optical coherence tomography images in 800–1700 nm wavelength region

机译：在800-1700 nm波长范围内的超高分辨率光学相干断层扫描图像的对比度和成像深度的定量比较

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摘要

We investigated the wavelength dependence of imaging depth and clearness of structure in ultrahigh-resolution optical coherence tomography over a wide wavelength range. We quantitatively compared the optical properties of samples using supercontinuum sources at five wavelengths, 800 nm, 1060 nm, 1300 nm, 1550 nm, and 1700 nm, with the same system architecture. For samples of industrially used homogeneous materials with low water absorption, the attenuation coefficients of the samples were fitted using Rayleigh scattering theory. We confirmed that the systems with the longer-wavelength sources had lower scattering coefficients and less dependence on the sample materials. For a biomedical sample, we observed wavelength dependence of the attenuation coefficient, which can be explained by absorption by water and hemoglobin.
机译：我们研究了在宽波长范围内超高分辨率光学相干断层扫描中成像深度和结构清晰度的波长依赖性。我们使用相同系统结构，在800 nm，1060 nm，1300 nm，1550 nm和1700 nm这五个波长下使用超连续谱光源，定量比较了样品的光学性能。对于具有低吸水率的工业用均质材料样品，使用瑞利散射理论拟合样品的衰减系数。我们确认具有较长波长源的系统具有较低的散射系数，并且对样品材料的依赖性较小。对于生物医学样品，我们观察到了衰减系数的波长依赖性，这可以通过水和血红蛋白的吸收来解释。

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