摘要
将X射线成像技术和微光成像技术相结合,设计了组合新型的X射线影像增强系统·为了得到满意的成像性能,在设计前研究了Gd2O2S∶Tb和CaWO4两种X射线屏和SuperS251和SuperS252两种光电阴极之间的四种屏-光电阴极组合的光谱匹配特征,对应的光谱匹配系数值分别为0.644,0.761,0.369,0.571·以光谱匹配曲线及光谱匹配系数计算数据为理论依据,最终选择Gd2O2S∶TbX射线屏和SuperS252光电阴极的组合作为该新型X射线影像增强系统的主要器件,得到了成像性能令人满意的X光机·
By combining the X-ray imaging technology and the low light level imaging technology, the research group designed the novel combined X-ray image intensifier. Before the design, the spectrum compatibility between Gd2O2S ： Tb,CaWO4 intensifying screens and Super S252 ,Super S251 photo cathode was analyzed, and the calculated values were 0. 644,0. 761,0. 369,0. 571 respectively. Basing on the spectral matching curves and the spectral matching factor values,the combination of Gd2O2S ： Tb screen and Super S252 photo cathode was chosen for the X-ray intensifying system of the novel X ray machine,which was of high imaging performance.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2006年第12期1875-1877,共3页
Acta Photonica Sinica
基金
南京市科技局基金(200308005)资助
关键词
X射线学
X光机
X射线像增强系统
X射线屏
微光像增强器
光谱响应
X -ray machine
X- ray image intensifying system
Intensifying screen
LLL image intensifier
Spectral response
