title: Establishment of rules for interpreting ultraviolet autofluorescence microscopy images for noninvasive detection of Barrett's esophagus and dysplasia.
abstract: The diagnostic potential of autofluorescence (AF) microscopy under ultraviolet (UV) excitation is explored using ex vivo human specimens. The aim is to establish optical patterns (the rules for interpretation) that correspond to normal and abnormal histologies of the esophagus, spanning from early benign modifications (Barrett's esophagus) to subsequent dysplastic change and progression toward carcinoma. This was achieved by developing an image library categorized by disease progression. We considered morphological changes of disease as they are compared with histological diagnosis of the pathological specimen, as well as control samples of normal esophagus, proximal stomach, and small intestine tissue. Our experimental results indicate that UV AF microscopy could provide real-time histological information for visualizing changes in tissue microstructure that are currently undetectable using conventional endoscopic methods.
authors.affiliation: University of California, Davis, NSF Center for Biophotonics Science and Technology, 4800 2nd Avenue, Sacramento, California 95817, USA. belin@ucdavis.edu
authors.forename: Bevin
authors.initials: B
authors.lastname: Lin
authors.forename: Shiro
authors.initials: S
authors.lastname: Urayama
authors.forename: Ramez M G
authors.initials: RM
authors.lastname: Saroufeem
authors.forename: Dennis L
authors.initials: DL
authors.lastname: Matthews
authors.forename: Stavros G
authors.initials: SG
authors.lastname: Demos
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000473:pathology; D001471:Barrett Esophagus / Q000175:diagnosis* / Q000473:pathology; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004947:Esophagus / Q000166:cytology / Q000473:pathology; D005753:Gastric Mucosa / Q000166:cytology / Q000473:pathology; D006651:Histocytochemistry; D006801:Humans; D007413:Intestinal Mucosa / Q000166:cytology / Q000473:pathology; D008856:Microscopy, Fluorescence / Q000379:methods*; D011230:Precancerous Conditions / Q000175:diagnosis* / Q000473:pathology; D014466:Ultraviolet Rays