Different phase-function approximations to determine optical properties of blood: a comparison

Anna N. Yaroslavsky; Ilya V. Yaroslavsky; Thomas Goldbach; Hans-Joachim Schwarzmaier M.D.

doi:10.1117/12.273654

2 May 1997 Different phase-function approximations to determine optical properties of blood: a comparison

Anna N. Yaroslavsky, Ilya V. Yaroslavsky, Thomas Goldbach, Hans-Joachim Schwarzmaier M.D.

Proceedings Volume 2982, Optical Diagnostics of Biological Fluids and Advanced Techniques in Analytical Cytology; (1997) https://doi.org/10.1117/12.273654
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

We investigated the impact of the scattering phase function approximation on the optical properties of whole human blood determined from integrating sphere measurements using an inverse Monte Carlo technique. The diffuse reflectance Rd and the total transmittance Tt ((lambda) equals 633nm) of the whole blood samples were measured with a double integrating sphere equipment. The experimental scattering phase functions of the highly diluted blood samples were measured with a goniophotometer. We approximated the experimental scattering phase function with Mie, Gegenbauer kernel (GKPF), and Henyey-Green (HGPF) phase functions to pre-set the anisotropy factor (mu) for the inverse problem. We have employed HGPF, GKPF, and MPF approximations in the inverse Monte Carlo procedure to derive the absorption coefficient (mu) _a and the scattering coefficient (mu) _s. The results show significant difference in the final estimates of (mu) _s. 12

Citation Download Citation

Anna N. Yaroslavsky, Ilya V. Yaroslavsky, Thomas Goldbach, and Hans-Joachim Schwarzmaier M.D. "Different phase-function approximations to determine optical properties of blood: a comparison", Proc. SPIE 2982, Optical Diagnostics of Biological Fluids and Advanced Techniques in Analytical Cytology, (2 May 1997); https://doi.org/10.1117/12.273654

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