title: An investigation of the imaging characteristics of the Y2O2S:Eu3+ phosphor for application in X-ray detectors of digital mammography.
abstract: Y2O2S:Eu laboratory prepared screens were evaluated as mammographic image receptors and were compared to similarly prepared screens of Gd2O2S:Tb and Y2O2S:Tb phosphor materials, often used in X-ray imaging detectors. The evaluation was performed by determining the Modulation Transfer Function (MTF) and the spatial frequency dependent Detective Quantum Efficiency (DQE). Y2O2S:Eu exhibited higher DQE values at low frequencies and given its good spectral matching with digital optical detectors, it may be appropriate for use in X-ray digital mammography.
authors.affiliation: Department of Medical Instrumentation Technology Techological Educational Institution of Athens, Greece.
authors.forename: D
authors.initials: D
authors.lastname: Cavouras
authors.forename: I
authors.initials: I
authors.lastname: Kandarakis
authors.forename: G S
authors.initials: GS
authors.lastname: Panayiotakis
authors.forename: E
authors.initials: E
authors.lastname: Kanellopoulos
authors.forename: D
authors.initials: D
authors.lastname: Triantis
authors.forename: C D
authors.initials: CD
authors.lastname: Nomicos
mesh_terms: D005063:Europium; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008163:Luminescent Measurements; D008327:Mammography / Q000295:instrumentation* / Q000379:methods*; D008432:Mathematical Computing; D010087:Oxides; D013440:Sulfides; D014965:X-Rays; D015019:Yttrium
chemical_list: D010087:Oxides; D013440:Sulfides; D005063:Europium; D015019:Yttrium