Influence of scattering phase function on P3 approximation

Ying Liu; Xiaojuan Zhang; Youzhou Hu; Yunhan Luo

doi:10.1117/12.546218

8 December 2003 Influence of scattering phase function on P₃ approximation

Ying Liu, Xiaojuan Zhang, Youzhou Hu, Yunhan Luo

Proceedings Volume 5254, Third International Conference on Photonics and Imaging in Biology and Medicine; (2003) https://doi.org/10.1117/12.546218
Event: Third International Conference on Photonics and Imaging in Biology and Medicine, 2003, Wuhan, China

Abstract

P₃ approximation of Boltzmann transport equation describes the radiance close to source with accuracy superior to diffuse approximation, which considers the high-order moments of phase function. Here, through studying the influence of two different phase functions on P₃ approximation, we find that the difference of diffuse reflectance in the P₃ approximation is distinct in about 0.45mm close to source for tissue phase function and Henyey-Greenstein (HG) phase function; tissue phase function can more character the microstructure of biological tissue than HG phase function. The research shows light for improving the accuracy of describing the radiance close to source, and of determining the optical properties of small volume tissue.

Citation Download Citation

Ying Liu, Xiaojuan Zhang, Youzhou Hu, and Yunhan Luo "Influence of scattering phase function on P₃ approximation", Proc. SPIE 5254, Third International Conference on Photonics and Imaging in Biology and Medicine, (8 December 2003); https://doi.org/10.1117/12.546218

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