Journal ArticleDOI
Differential x-ray phase contrast imaging using a shearing interferometer
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TLDR
In this paper, an x-ray interferometer was developed that uses two transmission phase gratings to analyze wave front distortions in the hard X-ray range, which was used for differential phase contrast imaging of low absorbingbing test objects.Abstract:
An x-ray interferometer has been developed that uses two transmission phase gratings to analyze wave front distortions in the hard x-ray range. The interferometer is insensitive to mechanical drift and vibrations, and it is tunable over a wide range of photon energies. This setup was used for differential phase contrast imaging of low-absorbing test objects. We obtained micrographs with moire fringes of good visibility, which revealed the local phase shift gradient caused by the objects. A comparison with numerically simulated images indicates that quantitative analysis of unknown phase objects is possible.read more
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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
Optics and interferometry with atoms and molecules
TL;DR: The development of wave optics for light brought many new insights into our understanding of physics, driven by fundamental experiments like the ones by Young, Fizeau, Michelson-Morley and others as mentioned in this paper.
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Quantitative X-ray tomography
Eric Maire,Philip J. Withers +1 more
TL;DR: In this paper, the authors review the current state of the art as CT transforms from a qualitative diagnostic tool to a quantitative one, including the use of iterative reconstruction strategies suited to specific segmentation tasks and emerging methods that provide more insight than conventional attenuation based tomography.
Journal ArticleDOI
X-ray phase-contrast imaging: from pre-clinical applications towards clinics
TL;DR: An overview of the main theoretical and experimental developments and of the important steps performed towards the clinical implementation of phase-contrast x-ray imaging is given.
Journal ArticleDOI
Recent advances in X-ray microtomography applied to materials
TL;DR: In this article, the authors highlight recent advances in X-ray microcomputed tomography (microCT) as applied to materials, specifically advances made since the first materials microCT review appeared in Internati...
References
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Journal ArticleDOI
X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92
TL;DR: In this article, the atomic scattering factors for all angles of coherent scattering and at the higher photon energies are obtained from these tabulated forward-scattering values by adding a simple angle-dependent form-factor correction.
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On the possibilities of x-ray phase contrast microimaging by coherent high-energy synchrotron radiation
TL;DR: In this paper, a straightforward experimental setup for phase contrast imaging is proposed and used to record holographic images from organic samples of 10-100 pm at energy lo-50 keV with the contrast up to 50%-100%.
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Observation of microstructure and damage in materials by phase sensitive radiography and tomography
Peter Cloetens,Murielle Pateyron-Salome,Jean-Yves Buffiere,Gilles Peix,José Baruchel,Françoise Peyrin,Michel Schlenker +6 more
TL;DR: In this paper, phase jumps related to the interface between the matrix and the reinforcing phases of the composites are detected even when these phases show very similar x-ray attenuation, illustrating the potential of the technique for assessing damage in materials with improved resolution and sensitivity.
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Phase-contrast x-ray computed tomography for observing biological specimens and organic materials
TL;DR: A phase contrast x-ray computed tomography (PCX-CT) was proposed in this article, which combines a phase contrast imaging technique with X-ray CT to provide sectional images of organic specimens that would produce absorption-contrast x−ray CT images with little contrast.