Laboratory x-ray interferometry imaging with a fan-shaped source grating
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2021-08-01
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Journal Article
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Abstract
The orientation mismatch between the cone beam of an X-ray tube and the grating lines in a flat substrate remains a big challenge for laboratory grating-based X-ray interferometry, since it severely limits the imaging field of view. Here, we fabricated fan-shaped G0 source gratings by modulating the electric field during the deep reactive ion etching of silicon. The gold electroplated fan-shaped G0 grating (3.0 µm pitch) in a 20 keV interferometer improves the uniformity of the field of view with an increase of average visibility from 16.2% to 18.5% and a better angular sensitivity (by a factor 5.8) at the edges.(© 2021 Optical Society of America)
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published
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46 (15)
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3693 - 3696
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American Institute of Physics
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154472 - Med-XPhase – Phase contrast X-ray imaging as a new diagnostic tool (SNF)
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159263 - X-ray phase-contrast micro computed tomography for improved pathology (SNF)
154472 - Med-XPhase – Phase contrast X-ray imaging as a new diagnostic tool (SNF)
183568 - GI-BCT - Clinical Grating Interferometry Breast Computed Tomography (SNF)