Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1889181 | Radiation Measurements | 2007 | 6 Pages |
Abstract
Two-dimensional indirect digital X-ray detectors use either a storage phosphor or a scintillator as an imaging plate. A storage phosphor forms a latent X-ray image, which is subsequently readout by a photostimulable luminescence process. A scintillator produces a visible image during X-ray illumination. Commercial storage-phosphor image plates have relatively poor spatial resolution because of light scattering during the readout. To improve their image resolution, europium (II)-doped fluorozirconate (FZ)-based glasses containing barium chloride nanoparticles have been developed. X-ray imaging showed that these storage-phosphor plates can resolve features as small as 17μm. By using appropriate thermal-processing conditions, the FZ-based glass ceramics can also be made into transparent glass ceramic scintillators. Imaging tests showed that these scintillators have a spatial resolution and efficiency comparable to those of a single-crystal CdWO4 scintillator. These results demonstrate that FZ-based glass ceramics are good candidates for digital radiography, either for storage phosphor or scintillator applications.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Stefan Schweizer, Jacqueline A. Johnson,