title: Monte Carlo simulations of increased/decreased scattering inclusions inside a turbid slab.
abstract: We analyse the effect on scattered photons of anomalous optical inclusions in a turbid slab with otherwise uniform properties. Our motivation for doing so is that inclusions affect scattering contrast used to quantify optical properties found from transmitted light intensity measured in transillumination experiments. The analysis is based on a lattice random walk formalism which takes into account effects of both positive and negative deviations of the scattering coefficient from that of the bulk. Our simulations indicate the existence of a qualitative difference between the effects of these two types of perturbations. In the case of positive perturbations the time delay is found to be proportional to the square of the size of the inclusion while for negative perturbations the time delay is a linear function of its volume.
authors.affiliation: Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, México DF.
authors.forename: Leonardo
authors.initials: L
authors.lastname: Dagdug
authors.forename: Victor
authors.initials: V
authors.lastname: Chernomordik
authors.forename: George H
authors.initials: GH
authors.lastname: Weiss
authors.forename: Amir H
authors.initials: AH
authors.lastname: Gandjbakhche
mesh_terms: D000465:Algorithms; D016880:Anisotropy; D003198:Computer Simulation; D015233:Models, Statistical; D008962:Models, Theoretical; D009010:Monte Carlo Method; D017785:Photons; D011857:Radiographic Image Interpretation, Computer-Assisted; D012031:Refractometry; D012542:Scattering, Radiation; D013997:Time Factors; D041622:Tomography, Optical