直径为88 mm单晶的第一个点扩散函数和X射线相位衬度成像结果
First Point-Spread Function and X-Ray Phase-Contrast Imaging Results With an 88-mm Diameter Single Crystal
摘要：
在这项研究中，我们报告的初步示范使用单晶间接X射线成像与台式实现的传播为基础的（PB）X射线相衬成像。基于对X射线图像的单个高斯峰拟合，我们观察到使用50 μm厚的单晶闪烁体的系统点扩散函数（PSF）比使用参考多晶磷光体/闪烁体的系统小四倍。光纤板的焦深和铝反射涂层方面也阐明。从25毫米直径的晶体样品的结果的指导下，我们报告额外的第一个结果与一个独特的88毫米直径的单晶粘结到光纤板和耦合到大格式CCD。PSF和X射线相衬成像数据都被量化和呈现。
英文摘要：
In this study, we report initial demonstrations of the use of single crystals in indirect x-ray imaging with a benchtop implementation of propagation-based (PB) x-ray phase contrast imaging. Based on single Gaussian peak fits to the x-ray images, we observed a four times smaller system point-spread function (PSF) with the 50-μm thick single crystal scintillators than with the reference polycrystalline phosphor/scintillator. Fiber-optic plate depth-of-focus and Al reflective-coating aspects are also elucidated. Guided by the results from the 25-mm diameter crystal samples, we report additionally the first results with a unique 88-mm diameter single crystal bonded to a fiber optic plate and coupled to the large format CCD. Both PSF and x-ray phase contrast imaging data are quantified and presented.
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