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Optical properties of highly scattering media determined from changes in attenuation, phase, and modulation depth

机译:由散射,相位和调制深度的变化确定的高散射介质的光学特性

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The optical properties of scattering media determine the attenuation (A) and the transit time ([t]) of light reflected from the medium as well as the phase (Phi) and modulation depth (M) of an intensity-modulated lightwave. Our primary finding is that the ratio of changes in A, Phi, and M is approximately independent of the scattering properties and gives a good estimate of the absorption coefficient. These changes can be induced either by small changes in the absorption coefficient of the medium, by the tuning of the wavelength, or by changes in the light source-detector distance. The application;for the in vivo monitoring of hemoglobin and oxyhemoglobin concentrations in human tissue is discussed. (C) 1997 Optical Society of America
机译:散射介质的光学特性决定了从介质反射的光的衰减(A)和传播时间([t])以及强度调制光波的相位(Phi)和调制深度(M)。我们的主要发现是,A,Phi和M的变化比率与散射特性大致无关,并且可以很好地估算吸收系数。这些变化可能是由于介质吸收系数的微小变化,波长的调整引起的,也可能是由于光源-检测器距离的变化引起的。讨论了用于体内监测人体组织中血红蛋白和氧合血红蛋白浓度的应用。 (C)1997年美国眼镜学会

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