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Determination of the concentration scaling law of the scattering coefficient of water solutions of Intralipid at 832 nm by comparison between collimated detection measurements and Monte Carlo simulations
Author(s) -
Autiero Maddalena,
Liuzzi Raffaele,
Riccio Patrizia,
Roberti Giuseppe
Publication year - 2005
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.20157
Subject(s) - monte carlo method , collimated light , scattering , scaling , transmittance , computational physics , materials science , optics , quadratic equation , range (aeronautics) , attenuation coefficient , linearity , scaling law , work (physics) , volume (thermodynamics) , physics , laser , statistical physics , mathematics , thermodynamics , statistics , quantum mechanics , composite material , geometry
Background and Objectives Intralipid (IP) is a scatterer extensively used in the building of phantoms for Biomedical Optics measurements. Recently, deviations from the linearity have been shown for the concentration scaling law of the scattering coefficient of IP water solutions at visible wavelengths. In this work this scaling law was determined at 832 nm. Study Design/Materials and Methods Space resolved transmittance measurements of a laser beam at 832 nm through water solutions of IP and ink were performed and compared with the corresponding results of Monte Carlo simulations. Results The comparison provides a quadratic dependence of μ ′ son the volume‐to‐volume scatterer concentration, C IP , in the range of C IP values (0.0024< C IP <0.0075). These deviations from the linear behavior are related to the failure of the independent scatterer approximation. Conclusion The quadratic dependence of ′ son C IP is in agreement with recent results obtained by other groups with different experimental techniques and is validated by a recent theoretical work. © 2005 Wiley‐Liss, Inc.