• français
    • English
    English
  • Ouvrir une session
Aide
Voir le document 
  •   Accueil de SAM
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • Voir le document
  • Accueil de SAM
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • Voir le document
JavaScript is disabled for your browser. Some features of this site may not work without it.

Light scattering in thin turbid tissue including macroscopic porosities: A study based on a Monte Carlo model

Article dans une revue avec comité de lecture
Auteur
VAUDELLE, Fabrice
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/17263
DOI
10.1016/j.optcom.2018.05.005
Date
2018
Journal
Optics Communications

Résumé

A Monte Carlo code is built taking into account macroscopic spheroid cavities inside a turbid medium, i.e. in mixing Multi-Layer Monte Carlo (MLMC) and Monte Carlo Ray Tracing (MCRT). That simulates a tissue with a strong and heterogeneous porosity, such as flesh tissues of fruit or bone tissues. This kind of tissue, which has two scales of porosity (microscopic and macroscopic), differs notably of the homogeneous and continuous model used in the usual radiative transfer equation. The influence of the presence of spheroids can be observed on the shape of the effective phase function, on the effect related to the time-resolved diffusion solution or also on the scattering coefficient retrieved by means of the Beer–Lambert relationship. For instance, the reduced scattering coefficients retrieved thanks to time-resolved transmittance from MLMC-MCRT models having a lot of intertwined large cavities show variations coherent with those retrieved from bone tissue. Furthermore, the effect of porosity on optical transmission seems to have a real impact when relative refractive index is close to 1. In this case, the equivalence problem between such porous MLMC-MCRT model and a homogeneous turbid medium, can be discussed at the level of the angular intensity distribution over the plane boundaries. This requires to fit this angular distribution by an Adding-Doubling model using optimized optical depth and scattering phase function. Experimental scattering phase functions obtained from apple tissues are considered in order to test this idea, and then compared with those computed with a MLMC-MCRT model.

Fichier(s) constituant cette publication

Nom:
LAMPA_OC_2018_VAUDELLE.pdf
Taille:
3.946Mo
Format:
PDF
Voir/Ouvrir

Cette publication figure dans le(s) laboratoire(s) suivant(s)

  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Influence of the size and skin thickness of apple varieties on the retrieval of internal optical properties using Vis/NIR spectroscopy: A Monte Carlo-based study 
    Article dans une revue avec comité de lecture
    VAUDELLE, Fabrice; L'HUILLIER, Jean-Pierre (Elsevier, 2015)
    Visible/near-infrared spectroscopy is a well-established method to measure optical properties of tissues, assuming that a light propagation model can be used to recover absorption and reduced scattering coefficients from ...
  • Time-resolved optical fluorescence spectroscopy of heterogeneous turbid media with special emphasis on brain tissue structures including diseased regions: A sensitivity analysis 
    Article dans une revue avec comité de lecture
    VAUDELLE, Fabrice; L'HUILLIER, Jean-Pierre (Elsevier, 2013)
    Fluorescence-enhanced optical imaging based on near-infrared light provides a promising tool to differentiate diseased lesions from normal tissue. However, the measurement sensitivity of the fluorescence signals acquired ...
  • Light source distribution and scattering phase function influence light transport in diffuse multi-layered media 
    Article dans une revue avec comité de lecture
    VAUDELLE, Fabrice; L'HUILLIER, Jean-Pierre; ASKOURA, Mohamed Lamine (Elsevier, 2017)
    Red and near-Infrared light is often used as a useful diagnostic and imaging probe for highly scattering media such as biological tissues, fruits and vegetables. Part of diffusively reflected light gives interesting information ...
  • Experimental Study of Light Propagation in Apple Tissues Using a Multispectral Imaging System 
    Article dans une revue avec comité de lecture
    ASKOURA, Mohamed Lamine; VAUDELLE, Fabrice; L'HUILLIER, Jean-Pierre (MDPI, 2016)
    This work aimed at high lighting the role played by the skin in the light propagation through the apple flesh. A multispectral Visible-Near Infrared (Vis-NIR) steady-state imaging setup based on the use of four continuous ...
  • Multispectral measurement of scattering-angular light distribution in apple skin and flesh samples 
    Article dans une revue avec comité de lecture
    ASKOURA, Mohamed Lamine; VAUDELLE, Fabrice; L'HUILLIER, Jean-Pierre (Optical Society of America, 2016)
    Knowledge of the optical properties of apple tissues such as skin and flesh is essential to better understand the light–tissue interaction process and to apply optical methods for apple quality inspection. This work aimed ...

Parcourir

Tout SAMLaboratoiresAuteursDates de publicationCampus/InstitutsCe LaboratoireAuteursDates de publicationCampus/Instituts

Lettre Diffuser la Science

Dernière lettreVoir plus

Statistiques de consultation

Publications les plus consultéesStatistiques par paysAuteurs les plus consultés

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales