A two-directional approach for grating based differential phase contrast imaging using hard x-rays.
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A two-directional approach for grating based x-ray differential phase contrast imaging with particular emphasis on the algorithm for proper phase retrieval to retrieve good quality and artifact-free phase images.Abstract:
We report on a two-directional approach for grating based x-ray differential phase contrast imaging. In order to retrieve good quality and artifact-free phase images for quantitative analysis and image processing, particular emphasis is put on the algorithm for proper phase retrieval. Examples of application are discussed that demonstrate the functionality of the method even in cases where the one-dimensional phase integration fails completely.read more
Citations
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X-ray phase-contrast imaging: from pre-clinical applications towards clinics
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TL;DR: 12 topics the authors expect to be critical in the next decade of computed tomography research and development are emphasized, emphasizing analytic reconstruction, iterative reconstruction, local/interior reconstruction, flat-panel based CT, dual-source CT, multi- source CT, novel scanning modes, energy-sensitive CT, nano-CT, artifact reduction, modality fusion, and phase-contrast CT.
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[An outlook on X-ray CT research and development].
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Single-shot x-ray differential phase-contrast and diffraction imaging using two-dimensional transmission gratings
TL;DR: An x-ray differential phase-contrast imaging method based on two-dimensional transmission gratings that are directly resolved by an x-rays that obviates the need for multiple exposures and separate measurements for different directions and thereby accelerates imaging speed.
References
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Journal ArticleDOI
Phase retrieval and differential phase-contrast imaging with low-brilliance X-ray sources
TL;DR: In this article, a setup consisting of three transmission gratings can efficiently yield quantitative differential phase-contrast images with conventional X-ray tubes, which can be scaled up to large fields of view.
Journal ArticleDOI
Phase-contrast imaging using polychromatic hard X-rays
TL;DR: In this paper, a simplified scheme for phase-contrast imaging based on an X-ray source having high spatial (but essentially no chromatic) coherence is presented. But the method is not suitable for large areas of irradiation, and it can operate with a lower absorbed dose than traditional Xray imaging techniques, and should find broad application in clinical, biological and industrial settings.
Book ChapterDOI
V Phase-Measurement Interferometry Techniques
TL;DR: The phase modulation in an interferometer can be induced by moving a mirror, tilting a glass plate, moving a grating, rotating a half-wave plate or analyzer, using an acoustooptic or electro-optic modulator, or using a Zeeman laser as mentioned in this paper.
Journal ArticleDOI
X-ray phase imaging with a grating interferometer.
Timm Weitkamp,Ana Diaz,Christian David,Franz Pfeiffer,Marco Stampanoni,Peter Cloetens,Eric Ziegler +6 more
TL;DR: Using a high-efficiency grating interferometer for hard X rays (10-30 keV) and a phase-stepping technique, separate radiographs of the phase and absorption profiles of bulk samples can be obtained from a single set of measurements.
Journal ArticleDOI
Diffraction enhanced x-ray imaging
Dean Chapman,W. Thomlinson,R. E. Johnston,David B. Washburn,Etta D. Pisano,Nicholas F. Gmur,Zhong Zhong,Ralf Hendrik Menk,Fulvia Arfelli,Dale E. Sayers +9 more
TL;DR: Diffraction enhanced imaging is a new x-ray radiographic imaging modality using monochromatic x-rays from a synchrotron which produces images of thick absorbing objects that are almost completely free of scatter.