title: A real-time, high-resolution optical fibre dosemeter based on optically stimulated luminescence (OSL) of KBr:Eu, for potential use during the radiotherapy of cancer.
abstract: A real-time optically stimulated luminescence (OSL) dosimetry system for potential in vivo use during radiotherapy treatments is proposed. Single-crystal europium-doped KBr samples were grown in a Bridgman furnace, and characterised using optical absorption techniques. An algorithm for the processing of the OSL signal was defined for use in real-time measurements, and its performance was studied on data obtained with a home-built reader, using optical-fibre-coupled dosemeters. OSL dose-response, fading properties and temperature dependence of the signal were investigated in correlation with the concentration of Eu(2+) dopant in the sample.
authors.affiliation: Department of Physics, Oklahoma State University, 145 PS II, Stillwater, OK 74078, USA. rgaza@mdanderson.org
authors.forename: R
authors.initials: R
authors.lastname: Gaza
authors.forename: S W S
authors.initials: SW
authors.lastname: McKeever
mesh_terms: D001965:Bromides / Q000737:chemistry* / Q000528:radiation effects*; D003199:Computer Systems; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005063:Europium / Q000737:chemistry / Q000528:radiation effects; D005240:Feasibility Studies; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy*; D017680:Potassium Compounds / Q000737:chemistry* / Q000528:radiation effects*; D011879:Radiotherapy Dosage; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods
chemical_list: D001965:Bromides; D017680:Potassium Compounds; D005063:Europium; C039004:potassium bromide