Kubelka—Munk模型下的人血管对632．8nm氦—氖激光的散射与吸收特性

本文测量了人动脉和静脉对He-Ne激光的反射和透射传输特性。实验采用两积分球系统及波长为632．8nm的He-Ne激光器，并根据测量数据及采用Kubelka-Munk模型分析和计算了人动脉和静脉组织对该波长激光的吸收系数、散射系统及总的光强I（x)及前向散射通量i(x)和后向散射通量j(x)的变化情况。结果表明，人动脉和静脉内外侧的漫反射率和透射率有明显差别，而且，动脉对激光的吸收系数明显较静脉的要小，而动脉对激光的散射系数却明显较静脉的要大，在动脉和静脉组织中总的光强I（x）及前向散射通量i(x)和后向散射通量j(x)的变化情况也有明显的区别。

Scattering and absorbing characteristics of human artery and vein in Kubelka-Munk model to 632.8nm wavelength of He-Ne laser in vitro

The diffuse reflectance and transmittance of human arteries and veins were studied.632.8nm wavelength of He-Ne laser was used in the experiment.The measurements were performed with two standard integrating sphere system.The absorption coefficient,scattering coefficient and the changes of total optical intensities I(x),forward scattering flux i(x),backward scattering flux j(x) as a function of thickness of human arteries and veins were evaluated and analyzed from the experimented data by Kubelka-Munk model.The results of measurement showed that significant difference of diffuse reflectance and transmittance between arteries and veins at 632.8nm wavelength of He-Ne laser.Furthermore,the absorption coefficient of arteries were obviously lesser than that of veins at He-Ne laser wavelength.And the scattering coefficient of arteries were obviously bigger than that of veins at He-Ne laser wavelength.The changes of total optical intensities I(x),forward scattering flux i(x),backward scattering flux j(x) as a function of human arteries and veins were also significant difference.