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当X射线穿过一个物体时,部分射线在一个10度的小锥体内被散射,对于某种特定的物体,这种散射的X射线的空间分布审于干涉效应都有特定的散射模式,利用这种特定的散射模式可以区分不同的物质,在一个很短的测量时间内,用一个普通的X射线管产生的射线透过一个物体的层面可产生出如CT一样的图象,由于入射X线的多色性而产生的图象对比度的下降可通过一个改进了的‘Anger Camera’检测系统得到增强,它的物理背景与我
When an X-ray passes through an object, part of it is scattered in a 10-degree cone. For a given object, the spatial distribution of this scattered X-ray is moderated by the interference effect and has a specific scattering pattern. This particular scattering pattern distinguishes between different substances. In a very short measurement time, the rays generated by a normal X-ray tube are transmitted through the surface of an object to produce a CT-like image. Due to the incident X The reduction in image contrast caused by the polychromaticity of the lines can be enhanced by an improved ’Anger Camera’ detection system that has a physical background that I