Kubelka-Munk模型下的兔血管对氦-氖激光的散射与吸收特性

测量了兔动脉和静脉对 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模型分析和计算了兔动脉和静脉组织对该长激光的吸收系数、散射系数及总的光强I（x）及前向散射通量i(x）和后向散射通量j(x）随厚度的变化情况。结果表明，兔动脉和静脉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）随组织厚度的变化情况也有明显的区别。

Scattering and Absorbing Characteristics of He-Ne Laser in Rabbit Arteries and Veins in Kubelka-Munk Model in Vitro

The diffuse reflectance and transmittance of He Ne laser in rabbit 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 systems. The absorption coefficient,scattering coefficient and the difference of total optical intensities I(x),forward scattering flux i(x),backward scattering flux j(x) with the change of the thickness of rabbit arteries and veins were evaluated and analyzed by Kubelka Munk model. The results showed significant difference in diffuse reflectance and transmittance between arteries and veins. Furthermore,the absorption coefficient of arteries was obviously smaller than that of veins. And the scattering coefficient of arteries were obviously bigger than that of veins. The total optical intensities I(x),forward scattering flux i(x) and backward scattering flux j(x) were also significantly different with the change of thickness of rabbit arteries and veins.