Storage Phosphors for Medical Imaging

被引：157
|
作者：
Leblans, Paul [1 ]
Vandenbroucke, Dirk [1 ]
Willems, Peter [2 ]
机构：
[1] Agfa HealthCare NV, B-2640 Mortsel, Belgium
[2] Ind Sci & Comp BVBA, B-9190 Stekene, Belgium
来源：
MATERIALS | 2011年 / 4卷 / 06期
关键词：
computed radiography; storage phosphor; X-ray; optically stimulated lumi-nescence; BaFBr:Eu2+; CsBr:Eu2+; needle imaging plate; image quality; COMPUTED RADIOGRAPHY SYSTEMS; RADIATION-INDUCED DEFECTS; PHOTOSTIMULATED LUMINESCENCE; STIMULATED LUMINESCENCE; HOLE-CENTERS; F-CENTERS; DIGITAL RADIOGRAPHY; ELECTRON; PERFORMANCE; MECHANISM;
D O I：
10.3390/ma4061034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Computed radiography (CR) uses storage phosphor imaging plates for digital imaging. Absorbed X-ray energy is stored in crystal defects. In read-out the energy is set free as blue photons upon optical stimulation. In the 35 years of CR history, several storage phosphor families were investigated and developed. An explanation is given as to why some materials made it to the commercial stage, while others did not. The photo stimulated luminescence mechanism of the current commercial storage phosphors, BaFBr:Eu2+ and CsBr:Eu2+ is discussed. The relation between storage phosphor plate physical characteristics and image quality is explained. It is demonstrated that the morphology of the phosphor crystals in the CR imaging plate has a very significant impact on its performance.
引用
收藏
页码：1034 / 1086
页数：53
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