title: Enhanced contrast and depth resolution in polarization imaging using elliptically polarized light.
abstract: Polarization gating is a popular and widely used technique in biomedical optics to sense superficial tissues (colinear detection), deeper volumes (crosslinear detection), and also selectively probe subsuperficial volumes (using elliptically polarized light). As opposed to the conventional linearly polarized illumination, we propose a new protocol of polarization gating that combines coelliptical and counter-elliptical measurements to selectively enhance the contrast of the images. This new method of eliminating multiple-scattered components from the images shows that it is possible to retrieve a greater signal and a better contrast for subsurface structures. In vivo experiments were performed on skin abnormalities of volunteers to confirm the results of the subtraction method and access subsurface information.
authors: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, 13013 Marseille, FrancebInstitut de Ciències Fotòniques, Universitat Politècnica de Catalunya, 08860 Castelldefels, Barcelona, Spain.
authors: Susmita
authors: S
authors: Sridhar
authors: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, 13013 Marseille, France.
authors: Anabela
authors: A
authors: Da Silva
mesh_terms: D000818:Animals; D002645:Chickens; D004655:Emulsions; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008859:Microscopy, Polarization / Q000379:methods*; D008954:Models, Biological; D009333:Neck / Q000502:physiology; D019047:Phantoms, Imaging; D010743:Phospholipids; D012867:Skin / Q000473:pathology; D013024:Soybean Oil
chemical_list: D004655:Emulsions; D010743:Phospholipids; C545823:soybean oil, phospholipid emulsion; D013024:Soybean Oil