Wiener spectral effects of spatial correlation between the sites of characteristic x-ray emission and reabsorption in radiographic screen-film systems.
Wiener spectral effects of spatial correlation between the sites of characteristic x-ray emission and reabsorption in radiographic screen-film systems.
复制标题
射线照相屏幕胶片系统中特征 X 射线发射和重吸收位置之间空间相关性的维纳光谱效应。
DOI：
10.1088/0031-9155/28/5/008
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发表时间：
1983
影响因子：
3.5
通讯作者：
Vyborny,CJ
中科院分区：
文献类型：
--
作者：
Metz,CE;Vyborny,CJ
当产生特征X射线并在射线照相屏幕-胶片系统的荧光粉中重新吸收时，从初始和第二次相互作用中发射的光的位置是相关的。建立了一个简单的统计模型来解释这种关联对量子斑点维纳谱的影响。与以前忽略空间相关性的模型不同，新模型预测当入射X射线能量超过荧光粉K边时，不仅噪声大小会改变，而且噪声纹理也会改变。
When characteristic x-rays are generated and reabsorbed in the phosphor of a radiographic screen-film system, the positions at which light is emitted from the initial and secondary interactions are correlated. A simple statistical model is developed to account for the effect of this correlation on the Wiener spectrum of quantum mottle. Unlike previous models, which ignore spatial correlation, the new model predicts that not only noise magnitude but also noise texture is changed as the incident x-ray energy exceeds the phosphor K-edge.