Phase-contrast X-ray imaging with synchrotron radiation for materials science applications

2003 ◽  
Vol 199 ◽  
pp. 427-435 ◽  
Author(s):  
A.W. Stevenson ◽  
T.E. Gureyev ◽  
D. Paganin ◽  
S.W. Wilkins ◽  
T. Weitkamp ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Materials Science ◽  
X Ray ◽  
X Ray Imaging

Absorption and Phase Contrast X-Ray Imaging in Paleontology Using Laboratory and Synchrotron Sources

2015 ◽  
Vol 21 (5) ◽  
pp. 1288-1295 ◽  
Author(s):  
Pidassa Bidola ◽  
Marco Stockmar ◽  
Klaus Achterhold ◽  
Franz Pfeiffer ◽  
Mírian L.A.F. Pacheco ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Materials Science ◽  
Science Research ◽  
Micro Computed Tomography ◽  
Geological Time ◽  
X Ray ◽  
Commercial Laboratory ◽  
X Ray Imaging ◽  
The World ◽  
Contrast Ct

AbstractX-ray micro-computed tomography (μCT) is commonly used for imaging of samples in biomedical or materials science research. Owing to the ability to visualize a sample in a nondestructive way, X-ray μCT is perfectly suited to inspect fossilized specimens, which are mostly unique or rare. In certain regions of the world where important sedimentation events occurred in the Precambrian geological time, several fossilized animals are studied to understand questions related to their origin, environment, and life evolution. This article demonstrates the advantages of applying absorption and phase-contrast CT on the enigmatic fossil Corumbella werneri, one of the oldest known animals capable of building hard parts, originally discovered in Corumbá (Brazil). Different tomographic setups were tested to visualize the fossilized inner structures: a commercial laboratory-based μCT device, two synchrotron-based imaging setups using conventional absorption and propagation-based phase contrast, and a commercial X-ray microscope with a lens-coupled detector system, dedicated for radiography and tomography. Based on our results we discuss the strengths and weaknesses of the different imaging setups for paleontological studies.

Phase-Contrast X-Ray Imaging Using Both Vertically and Horizontally Expanded Synchrotron Radiation X-Rays with Asymmetric Bragg Reflection

1999 ◽  
Vol 38 (Part 2, No. 4B) ◽  
pp. L470-L472 ◽  
Author(s):  
Yasushi Kagoshima ◽  
Yoshiyuki Tsusaka ◽  
Kazushi Yokoyama ◽  
Kengo Takai ◽  
Shingo Takeda ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Bragg Reflection ◽  
X Rays ◽  
X Ray ◽  
X Ray Imaging

scholarly journals In-Line Phase-Contrast X-ray Imaging and Tomography for Materials Science

Materials ◽  
2012 ◽  
Vol 5 (12) ◽  
pp. 937-965 ◽  
Author(s):  
Sheridan C. Mayo ◽  
Andrew W. Stevenson ◽  
Stephen W. Wilkins
Keyword(s):  
Phase Contrast ◽  
Materials Science ◽  
X Ray ◽  
X Ray Imaging

scholarly journals Visualization of protein crystals by high-energy phase-contrast X-ray imaging

2019 ◽  
Vol 75 (11) ◽  
pp. 947-958 ◽  
Author(s):  
Maxim Polikarpov ◽  
Gleb Bourenkov ◽  
Irina Snigireva ◽  
Anatoly Snigirev ◽  
Sophie Zimmermann ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Data Collection ◽  
Diffraction Data ◽  
Phase Contrast ◽  
High Energy ◽  
Protein Crystals ◽  
Cubic Phase ◽  
Macromolecular Crystallography ◽  
X Ray ◽  
X Ray Imaging

For the extraction of the best possible X-ray diffraction data from macromolecular crystals, accurate positioning of the crystals with respect to the X-ray beam is crucial. In addition, information about the shape and internal defects of crystals allows the optimization of data-collection strategies. Here, it is demonstrated that the X-ray beam available on the macromolecular crystallography beamline P14 at the high-brilliance synchrotron-radiation source PETRA III at DESY, Hamburg, Germany can be used for high-energy phase-contrast microtomography of protein crystals mounted in an optically opaque lipidic cubic phase matrix. Three-dimensional tomograms have been obtained at X-ray doses that are substantially smaller and on time scales that are substantially shorter than those used for diffraction-scanning approaches that display protein crystals at micrometre resolution. Adding a compound refractive lens as an objective to the imaging setup, two-dimensional imaging at sub-micrometre resolution has been achieved. All experiments were performed on a standard macromolecular crystallography beamline and are compatible with standard diffraction data-collection workflows and apparatus. Phase-contrast X-ray imaging of macromolecular crystals could find wide application at existing and upcoming low-emittance synchrotron-radiation sources.

Medical Applications with Synchrotron Radiation in Japan

1998 ◽  
Vol 5 (3) ◽  
pp. 326-332 ◽  
Author(s):  
Tohoru Takeda ◽  
Yuji Itai ◽  
Kazuyuki Hyodo ◽  
Masami Ando ◽  
Takao Akatsuka ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Coronary Arteries ◽  
Phase Contrast ◽  
Coronary Arteriography ◽  
Medical Applications ◽  
Imaging Method ◽  
Two Dimensional ◽  
X Ray ◽  
X Ray Imaging ◽  
X Ray Computed

In Japan, various medical applications of synchrotron X-ray imaging, such as angiography, monochromatic X-ray computed tomography (CT), radiography and radiation therapy, are being developed. In particular, coronary arteriography (CAG) is quite an important clinical application of synchrotron radiation. Using a two-dimensional imaging method, the first human intravenous CAG was carried out at KEK in May 1996; however, further improvements of image quality are required in clinical practice. On the other hand, two-dimensional aortographic CAG revealed canine coronary arteries as clearly as those on selective CAG, and coronary arteries less than 0.2 mm in diameter. Among applications of synchrotron radiation to X-ray CT, phase-contrast X-ray CT and fluorescent X-ray CT are expected to be very interesting future applications of synchrotron radiation. For actual clinical applications of synchrotron radiation, a medical beamline and a laboratory are now being constructed at SPring-8 in Harima.

scholarly journals Experience with Imaging by Using of Microfocus X-Ray Source

2010 ◽  
Vol 61 (5) ◽  
pp. 287-290 ◽  
Author(s):  
Zdenko Zápražný ◽  
Dušan Korytár ◽  
František Dubecký ◽  
Vladimír Áč ◽  
Zbigniew Stachura ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Ccd Camera ◽  
X Ray ◽  
X Ray Imaging ◽  
Radiation Sources ◽  
Set Up ◽  
High Level ◽  
Very High

Experience with Imaging by Using of Microfocus X-Ray SourceIn this paper we present the current work and experience with using microfocus x-ray generator and commercial CCD camera for x-ray imaging purpose. There is a need in laboratories for the development of imaging methods approaching synchrotron radiation sources, where the brilliance of radiation is on very high-level. Generally, there is no continuous access to synchrotron facilities. Several synchrotron radiation laboratories allocate the access via a proposal system. Thus the time for synchrotron radiation experiments seldom exceeds more than 1-2 weeks per year, which restricts its application to a few selected experiments. Even in future, the routine characterization of samples will be performed mainly at the experimenters home laboratories [10]. In this contribution we show that with the present set-up it is possible to achieve the spatial resolution down to μm and with the appropriate geometry a phase contrast images are observable.

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