Scattering and absorbing characteristics of rabbit arteries and veins in Kubelka-Munk model at 488.0nm wavelength of Ar+ laser in vitro
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摘要: 测量了兔动脉和静脉对Ar+激光的反射和透射传输特性.实验采用两积分球系统及Ar+激光器,并根据测量数据和采用Kubelka-Munk模型分析、计算了兔动脉与静脉组织对该波长激光的吸收系数、散射系数、总光强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,兔动脉与静脉的漫反射率和透射率有明显差别,且动脉对激光的吸收系数明显较静脉的小,而动脉对激光的散射系数却明显较静脉的大,在动脉和静脉组织中总光强I(x)、前向散射通量i(x)和后向散射通量j(x)随厚度的变化情况也有明显的区别.
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关键词:
- 兔 /
- Kubelka-Munk模型 /
- Ar+激光 /
- 血管 /
- 散射与吸收特性
Abstract: The diffuse reflectance and transmittance of rabbit arteries and veins are studied with the help of Ar+ laser.The measurements are performed with two standard integrating sphere systems.Based on Kubelka Munk model and experiments,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 rabbit arteries and veins have been evaluated and analyzed.Measurement results show that there is significant difference of reflectance and transmittance between arteries and veins at 488.0nm wavelength of Ar+ laser.At the same time,the absorption coefficient of arteries is obviously lower than that of veins and the scattering coefficient is much higher than that of veins.Although total optical intensities I(x),forward scattering flux i(x),backward scattering flux j(x) are functions of thickness of rabbit arteries and veins respectively,there are obvious difference between arteries and veins.-
Keywords:
- rabbit /
- Kubelka Munk model /
- Ar+ laser /
- arteries and veins /
- absorption and scattering properties
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