Elemental Contrast X-ray Tomography Using Ross Filter Pairs with a Polychromatic Laboratory Source.
Elemental Contrast X-ray Tomography Using Ross Filter Pairs with a Polychromatic Laboratory Source.
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DOI：
10.1038/s41598-017-00304-7
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发表时间：
2017-03-16
影响因子：
4.6
通讯作者：
Abbey B
中科院分区：
文献类型：
--
作者：
Arhatari BD;Gureyev TE;Abbey B
目前大多数基于实验室的x射线源是多色的，不可调谐。这种单色性的缺乏限制了这些光源的应用范围，特别是它降低了基于实验室的x射线成像实验的元素特异性。本文提出了一种基于罗斯滤波器对的解决方案。虽然这样的罗斯滤光器安排已经应用于原理验证光谱实验中，但迄今为止还没有将这种方法用于全场x射线成像的报道。在这里，我们报告了罗斯滤波器对用于准单色，全场成像的实验演示。这种安排对基于实验室的x射线成像有几个重要的好处，包括，正如我们所展示的，元素对比度增强。该方法既适用于二维x射线照相，也适用于三维x射线断层摄影。
The majority of current laboratory based X-ray sources are polychromatic and are not tuneable. This lack of monochromaticity limits the range of applications for these sources and in particular it reduces the elemental specificity of laboratory based X-ray imaging experiments. Here we present a solution to this problem based on the use of Ross filter pairs. Although such Ross filter arrangements have been applied in proof-of-principle spectroscopy experiments, to date there have been no reports of this approach used for full-field X-ray imaging. Here we report on the experimental demonstration of Ross filter pairs being used for quasi-monochromatic, full-field imaging. This arrangement has several important benefits for laboratory based X-ray imaging including, as we demonstrate, elemental contrast enhancement. The method is demonstrated both for two-dimensional radiography and for three-dimensional X-ray tomography.