Phase-contrast imaging using polychromatic hard X-rays

@article{Wilkins1996PhasecontrastIU,
  title={Phase-contrast imaging using polychromatic hard X-rays},
  author={Stephen W. Wilkins and Timur E Gureyev and Da Chao Gao and Andrew Pogany and Andrew W. Stevenson},
  journal={Nature},
  year={1996},
  volume={384},
  pages={335-338}
}
IN conventional radiography, X-rays which pass through an object along different paths are differentially absorbed, and the intensity pattern of the emerging beam records the distribution of absorbing materials within the sample. An alternative approach is phase-contrast radiography, which instead records variations of the phase of the emerging radiation. Such an approach offers improved contrast sensitivity, especially when imaging weakly absorbing samples. Unfortunately, current phase… Expand
View on Springer
1,549 Citations
Highly Influential Citations
46
Background Citations
279
Methods Citations
130
Results Citations
2

1,549 Citations

Citation Type

Citation Type

Benchtop phase-contrast X-ray imaging.
TLDR
In this paper, imaging results obtained from two different benchtop X-ray sources employing the free space propagation method are presented, providing higher contrast in many samples, including biological tissues that have negligible absorption contrast. Expand
Review of X-ray Phase Contrast Imaging Techniques and Propagation Based Imaging Using a Benchtop Microfocal Source
Currently, the basis for standard clinical X-ray radiography is absorption, tracking attenuation of radiation when X-ray beams pass through a particular part of the body. The fundamental interaction… Expand
Phase retrieval and differential phase-contrast imaging with low-brilliance X-ray sources
X-ray radiographic absorption imaging is an invaluable tool in medical diagnostics and materials science. For biological tissue samples, polymers or fibre composites, however, the use of conventional… Expand
A coded-aperture based method allowing non-interferometric phase contrast imaging with incoherent X-ray sources
Abstract X-ray phase contrast imaging is a method whereby conventional X-ray absorption is replaced by refraction/interference effects taking place inside the imaged object. Approximately 15 years of… Expand
Quantitative multimodal x-ray tomography: absorption, phase, and darkfield contrast
The basic principles of x-ray image formation in radiography have remained essentially unchanged since R¨ontgen first discovered x-rays over a hundred years ago. The conventional approach relies on… Expand
Phase-sensitive x-ray ghost imaging
Imaging with hard x-rays is an invaluable tool in medicine, biology, materials science, and cultural heritage. Propagation-based x-ray phase-contrast imaging and tomography have been mostly used to… Expand
Quantitative methods in phase-contrast x-ray imaging
TLDR
The proposed technique allows rapid noninvasive characterization of the internal structure of thick optically opaque organic samples and should find wide-ranging applications in clinical radiology and medical research. Expand
Phase Retrieval Methods for Polychromatic Propagation-Based Phase-Contrast X-ray Imaging
X-ray imaging, based on conventional attenuation methods, is employed in various industrial, medical and scientific imaging application. Phase-contrast X-ray imaging is an emerging modality that has… Expand
Phase contrast in x-ray imaging
X-ray phase contrast imaging (PCI) has the potential, over certain energy ranges, to improve conventional x-ray diagnostic practice by utilizing the higher phase than absorption coefficient in the… Expand
Grating-based X-ray phase contrast imaging using polychromatic laboratory sources
Abstract X-ray phase contrast imaging has been demonstrated to have an improved contrast over conventional absorption imaging for those weakly absorbing objects. However, most of the hard X-ray… Expand
...
1
2
3
4
5
...

References

SHOWING 1-9 OF 9 REFERENCES
Phase-contrast imaging of weakly absorbing materials using hard X-rays
IMAGING with hard X-rays is an important diagnostic tool in medicine, biology and materials science. Contact radiography and tomography using hard X-rays provide information on internal structures… Expand
Phase–contrast X–ray computed tomography for observing biological soft tissues
TLDR
A means of observing biological tissues in three dimensions using a novel X–ray computed tomography (CT) by modifying the phase–contrast technique, which was able to clearly differentiate the cancer lesion from the normal tissue. Expand
Phase objects in synchrotron radiation hard x-ray imaging
Phase objects are readily imaged through Fresnel diffraction in the hard x-ray beams of third-generation synchrotron radiation sources such as the ESRF, due essentially to the very small angular size… Expand
Quantitative Phase Imaging Using Hard X Rays.
TLDR
The quantitative imaging of a phase object using 16keV xrays is reported and it is found that the phase image is in quantitative agreement with independent measurements of the object. Expand
X-ray plane-wave topography observation of the phase contrast from a non-crystalline object
A technique for observation of the inner structure of objects is proposed. The sensitivity to variations in direction of the primary pseudo-plane beam which occurs on boundaries between media with… Expand
Double crystal diffractometry for the characterization of targets for laser fusion experiments
The application of a double-crystal diffractometer for the production of X-ray Schlieren topographs is described. The experimental arrangement is optimized on the basis of a wave-optical description… Expand
A New Microscopic Principle
TLDR
An improvement of the resolution by one decimal wotild require a correction of the objective to four decimals, a practically hopeless task. Expand
Phase retrieval with the transport-of-intensity equation: matrix solution with use of Zernike polynomials
A new technique is proposed for the recovery of optical phase from intensity information. The method is based on the decomposition of the transport-of-intensity equation into a series of Zernike… Expand
AN X‐RAY INTERFEROMETER