Non-destructive phase contrast hard x-ray imaging to reveal the three-dimensional microstructure of soft and hard tissues

2016 ◽  
Author(s):  
Anna Khimchenko ◽  
Georg Schulz ◽  
Hans Deyhle ◽  
Simone E. Hieber ◽  
Samiul Hasan ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Three Dimensional ◽  
X Ray ◽  
X Ray Imaging ◽  
Hard Tissues ◽  
Non Destructive

On-Site Non-Destructive Inspection of Bridges Using the 950 keV X-Band Electron Linac X-ray Source

2017 ◽  
Vol 12 (3) ◽  
pp. 578-584 ◽  
Author(s):  
Mitsuru Uesaka ◽  
◽  
Yuki Mitsuya ◽  
Eiko Hashimoto ◽  
Katsuhiro Dobashi ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Bridge Inspection ◽  
Electron Linac ◽  
X Ray ◽  
Band Electron ◽  
Reconstruction Methods ◽  
X Ray Imaging ◽  
X Band ◽  
Near Future ◽  
Non Destructive

Regular diagnosis of the structural health of infrastructure, such as bridges, is indispensable to ensure safety and reliable operation of the society. Non-destructive tests based on X-ray imaging are powerful tools to inspect the inside of a concrete structure in detail. Establishing a diagnostic method of bridges based on X-ray visualization is required to examine the internal conditions and helps in the rationalization of maintenances. We demonstrated our 950 keV X-band electron linac based X-ray source for on-site actual bridge inspection and visualized the inner structure of a bottom floor slab. For the more precise inspection of the conditions of wires and rods, we applied three-dimensional image reconstruction methods for bridge mock-up samples. Partial angle computed tomography and tomosynthesis gave cross section images of the samples with 1 mm resolution. We are planning to investigate another part of the bridge, with the 950 keV X-ray system in the near future.

Hybrid quantitative simulation on the in-line phase-contrast x-ray imaging of three dimensional samples under actual clinic imaging parameters

2009 ◽  
Vol 95 (1) ◽  
pp. 011111 ◽  
Author(s):  
Hong Yu ◽  
Shensheng Han ◽  
Jianhui Ding ◽  
Zhaoxia Jiang ◽  
Weijun Peng
Keyword(s):  
Phase Contrast ◽  
Three Dimensional ◽  
X Ray ◽  
Imaging Parameters ◽  
X Ray Imaging

Application to Non Destructive Physical Analysis Method Using X-ray CT Imaging

2010 ◽  
Author(s):  
Akira Mizoguchi ◽  
Minoru Sugawara ◽  
Masahide Nakamura ◽  
Koichiro Takeuchi
Keyword(s):  
Failure Analysis ◽  
Three Dimensional ◽  
Ct Imaging ◽  
Temperature Cycling ◽  
Physical Analysis ◽  
Printed Wiring Boards ◽  
X Ray ◽  
X Ray Imaging ◽  
X Ray Computed ◽  
Non Destructive

Abstract We have been paying attention to the development of the nondestructive physical analysis (NDPA) technology. We think that NDPA is a technology which doesn't depend on the worker's capability or experience. There are many NDPA techniques, and analysis using X-ray imaging is one of the principal techniques. Due to the progress of the image analysis using computers in recent years, X-ray imaging have been evolving from two dimensional images to three dimensional imaging. We have been applying X-ray CT imaging to actual failure analysis and reliability evaluation since 2008. At ISTFA 2009, we reported on the effectiveness of X-ray Computed Tomography (CT) images in the failure analysis. [1] We confirmed that the X-ray CT image had various applications, for example, screening for counterfeit parts, the detection of the defect of the multi-layers printed wiring boards (multi-layers PWB), the structure confirmation of caulking contacts, and the detection of cracks or voids of the solder joint. This paper discusses the effectiveness of X-ray CT imaging in failure analysis and discusses the effectiveness of applying X-ray CT imaging to the propagation of cracks occurring at solder joints during temperature cycling test.

HTR Fuel Integrity With Electromagnetic, Vision and Radiographic Nondestructive Evaluation Methods

2008 ◽  
Author(s):  
Pierre Guillermier ◽  
Julien Banchet ◽  
David Tisseur ◽  
Se´bastien Hermosilla Lara ◽  
Marc Bivert ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Crack Detection ◽  
Eddy Currents ◽  
Evaluation Methods ◽  
Structural Defects ◽  
Control Methods ◽  
Fuel Production ◽  
X Ray ◽  
X Ray Imaging ◽  
Non Destructive

In order to ensure HTR fuel qualification, as well as reactor safety, particles need to satisfy a set of specifications including particle integrity. To achieve this goal, AREVA NP has been engaged for several years in a R&D program aiming at the development of innovative industrial non destructive evaluation methods for HTR fuel as alternatives to destructive methods. After investigating a number of potential techniques, development has been focused on vision and eddy currents, both aiming at crack detection. High resolution Phase Contrast X-Ray imaging was also studied for structural defects characterization. For all these techniques, besides the development of HTR fuel dedicated control methods, equipment and probes were specifically designed, tested and optimized thanks to experiments conducted on real and artificial flaws, yielding for some of the methods to potential industrialization and quality control performed over 100% of the fuel production.

X-Ray Phase-Contrast Tomography for Quantitative Characterisation of Self-Healing Polymers

2010 ◽  
Vol 654-656 ◽  
pp. 2322-2325 ◽  
Author(s):  
Sheridan Mayo ◽  
Andrew Stevenson ◽  
Stephen Wilkins ◽  
Da Chao Gao ◽  
Steven Mookhoek ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Three Dimensional ◽  
Polymer System ◽  
Self Healing ◽  
Contrast Imaging ◽  
X Ray ◽  
X Ray Imaging ◽  
Quantitative Characterisation ◽  
Micro Tomography ◽  
Phase Contrast Tomography

X-ray phase-contrast imaging and tomography add an additional dimension to conventional x-ray methods by exploiting the x-ray refraction effects in addition to x-ray absorption in forming an image. This greatly enhances the visibility of edges, voids and boundaries within a sample. It also makes it possible to characterise weakly x-ray absorbing samples which would produce little or no contrast in conventional x-ray imaging. Here we described the application of a laboratory-based x-ray phase-contrast microscope to x-ray micro-tomography of a self-healing polymer system and the quantitative analysis of the resulting three dimensional (3D) datasets to better understand the healing and ageing processes.

Computer simulations of X-ray phase-contrast images and microtomographic observation of tubules in dentin

2020 ◽  
Vol 27 (2) ◽  
pp. 462-467
Author(s):  
T. S. Argunova ◽  
V. G. Kohn ◽  
J.-H. Lim ◽  
Z. V. Gudkina ◽  
E. D. Nazarova
Keyword(s):  
Phase Contrast ◽  
Three Dimensional ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Dentinal Tubules ◽  
X Ray ◽  
Coherent Synchrotron Radiation ◽  
X Ray Imaging ◽  
Section Structure ◽  
Comparative Examination

An investigation of the problems of X-ray imaging of dentinal tubules is presented. Two main points are addressed. In the first part of this paper, the problem of computer simulating tubule images recorded in a coherent synchrotron radiation (SR) beam has been discussed. A phantom material which involved a two-dimensional lattice of the tubules with parameters similar to those of dentin was considered. By a comparative examination of two approximations, it was found that the method of phase-contrast imaging is valid if the number of tubules along the beam is less than 100. Calculated images from a lattice of 50 × 50 tubules are periodic in free space but depend strongly on the distance between the specimen and the detector. In the second part, SR microtomographic experiments with millimetre-sized dentin samples in a partially coherent beam have been described. Tomograms were reconstructed from experimental projections using a technique for incoherent radiation. The main result of this part is the three-dimensional rendering of the directions of the tubules in a volume of the samples. Generation of the directions is possible because a tomogram shows the positions of the tubules. However, a detailed tubule cross-section structure cannot be restored.

scholarly journals Principles of Different X-ray Phase-Contrast Imaging: A Review

2021 ◽  
Vol 11 (7) ◽  
pp. 2971
Author(s):  
Siwei Tao ◽  
Congxiao He ◽  
Xiang Hao ◽  
Cuifang Kuang ◽  
Xu Liu
Keyword(s):  
Biological Samples ◽  
Phase Contrast ◽  
Recent Progress ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
X Ray Imaging ◽  
Internal Structures ◽  
X Ray Absorption ◽  
Made In

Numerous advances have been made in X-ray technology in recent years. X-ray imaging plays an important role in the nondestructive exploration of the internal structures of objects. However, the contrast of X-ray absorption images remains low, especially for materials with low atomic numbers, such as biological samples. X-ray phase-contrast images have an intrinsically higher contrast than absorption images. In this review, the principles, milestones, and recent progress of X-ray phase-contrast imaging methods are demonstrated. In addition, prospective applications are presented.

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