Retrieval of weak x-ray scattering using edge illumination
X-ray phase contrast imaging provides additional modes of image contrast compared to conventional attenuation-based x-ray imaging, thus providing additional structural and functional information about the sample. The edge-illumination (EI) technique has been used to provide attenuation, refraction,...
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Published in | Optics letters Vol. 43; no. 16; p. 3874 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
15.08.2018
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Online Access | Get more information |
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Summary: | X-ray phase contrast imaging provides additional modes of image contrast compared to conventional attenuation-based x-ray imaging, thus providing additional structural and functional information about the sample. The edge-illumination (EI) technique has been used to provide attenuation, refraction, and scattering contrast in both biological and non-biological samples. However, the retrieval of low scattering signals by fitting a single Gaussian remains problematic, principally due to the inability of the EI system to achieve perfect dark-field illumination. We present a new retrieval method that fits three Gaussians, which successfully overcomes this limitation, and provide examples of the retrieval of such signals in highly absorbing, weakly scattering samples. |
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ISSN: | 1539-4794 |
DOI: | 10.1364/OL.43.003874 |