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A Polydisperse Sphere Model Describing the Propagation of Light in Biological Tissue |
| WANG Qing-Hua;LI Zhen-Hua;LAI Jian-Cheng;HE An-Zhi |
| Department of Information Physics and Engineering, Nanjing University of Science and Technology, Nanjing 210094 |
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| Cite this article: |
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WANG Qing-Hua, LI Zhen-Hua, LAI Jian-Cheng et al 2007 Chin. Phys. Lett. 24 1076-1079 |
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Abstract A polydisperse sphere model with the complex refractive index is employed to describe the propagation of light in biological tissue. The scattering coefficient, absorption coefficient and scattering phase function are calculated. At the same time, the inverse problem on retrieving the particles size distribution, imaginary part of the refractive index and number density of scatterers is investigated. The result shows that the retrieval scheme together with the Chahine algorithm is effective in dealing with such an inverse problem. It is also clarified that a group of parameters including the scattering coefficient, absorption coefficient and phase function are associated with another group including the refractive index, particle size distribution and number density of scatterers, which is a problem described in two different ways and the anisotropy factor is not an independent variable, but is determined by the phase function.
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78.35.+c
78.20.Ci
02.30.Zz
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Received: 30 November 2006
Published: 26 March 2007
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| PACS: |
78.35.+c
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(Brillouin and Rayleigh scattering; other light scattering)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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02.30.Zz
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(Inverse problems)
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