Partial coherence theory for x-ray phase contrast imaging technique with gratings

2012 ◽  
Vol 285 (24) ◽  
pp. 4763-4774 ◽  
Author(s):  
Yu Zhou ◽  
Alfred K. Louis ◽  
Tie Zhou ◽  
Ming Jiang
Keyword(s):  
Phase Contrast ◽  
Imaging Technique ◽  
Partial Coherence ◽  
Phase Contrast Imaging ◽  
Coherence Theory ◽  
Contrast Imaging ◽  
X Ray

Application of X-ray phase-contrast imaging technique in the study of pyrocarbon-coated zirconia kernels

2009 ◽  
Vol 42 (5) ◽  
pp. 384-388 ◽  
Author(s):  
Y.S. Kashyap ◽  
P.S. Yadav ◽  
P.S. Sarkar ◽  
A. Agrawal ◽  
T. Roy ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Imaging Technique ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

scholarly journals A quantitative, non-interferometric X-ray phase contrast imaging technique

2013 ◽  
Vol 21 (1) ◽  
pp. 647 ◽  
Author(s):  
Peter R.T. Munro ◽  
Luigi Rigon ◽  
Konstantin Ignatyev ◽  
Frances C.M. Lopez ◽  
Diego Dreossi ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Imaging Technique ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

Application of X-ray Phase Contrast Imaging Technique in Detection of Pulmonary Lesions Induced by Multi-WalledCarbon Nanotubes in Rats

2008 ◽  
Vol 8 (7) ◽  
pp. 3357-3362 ◽  
Author(s):  
Jungang Li ◽  
Yanling Xue ◽  
Bo Han ◽  
Qingnuan Li ◽  
Lixiang Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Pulmonary Toxicity ◽  
Phase Contrast ◽  
Imaging Technique ◽  
Phase Contrast Imaging ◽  
Phase Imaging ◽  
Contrast Imaging ◽  
Pulmonary Lesions ◽  
X Ray ◽  
Absorption Contrast

With X-ray phase contrast imaging technique, the pulmonary lesions induced by multi-walled carbon nanotubes were preliminarily studied in this work. After 0.1, 1 and 2 mg nanotubes were delivered into lungs of rats via trachea, their acute pulmonary toxicity (at 5-day postexposure) was assessed using X-ray phase contrast, absorption contrast imaging and routine pathological slice techniques. As such, the long-term pulmonary toxicity (at 140-day postexposure), induced by single intratracheal instillation of 0.1 mg nanotubes, was assessed using X-ray phase contrast imaging and pathological slice techniques. As a consequence, the nanotubes could induce obvious density and structural integrity alternation in lung tissue at 5-day postexposure and granulomas at 140-day postexposure, and these pathologic lesions could be efficiently detected out with the phase imaging technique. By comparison, this technique not only gained advantage over the conventional X-ray absorption contrast imaging but also could supply the gap of routine pathological slice in detecting pulmonary lesions induced by carbon nanotubes. It is hoped that this work can act as an impetus for further application of phase imaging technique to nanotoxicology and to assessment of occupational safety of nanomaterials.

Measurement of Diesel Nozzle Geometry with X-Ray Phase Contrast Imaging Technique

2013 ◽  
Vol 694-697 ◽  
pp. 1224-1228
Author(s):  
Yi Yan ◽  
Zhi Xia He ◽  
Wen Jun Zhong ◽  
Zhao Chen Jiang ◽  
Ya Nan Fu
Keyword(s):  
Phase Contrast ◽  
Imaging Technique ◽  
Phase Contrast Imaging ◽  
Nozzle Geometry ◽  
Reconstruction Technique ◽  
Three Dimension ◽  
Contrast Imaging ◽  
X Ray ◽  
Diesel Nozzle ◽  
Destructive Measurement

Diesel spray characteristic s is affected by nozzle geometry and then influences the subsequent combustion and emission, so it's important to get the detail nozzle geometry dimensions. In this paper, the X-Ray phase contrast imaging technique was proposed to measure the nozzle geometry. With X-microtomography technique and three-dimension reconstruction technique, the internal structure of nozzle is constructed. The non-destructive measurement was performed and the detail structure of nozzle was got.

Laboratory-based X-ray phase-contrast imaging technique for material and medical science applications

2008 ◽  
Vol 66 (8) ◽  
pp. 1083-1090 ◽  
Author(s):  
Yogesh S. Kashyap ◽  
P.S. Yadav ◽  
Tushar Roy ◽  
P.S. Sarkar ◽  
M. Shukla ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Imaging Technique ◽  
Medical Science ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

Evaluating the effects of source conditions on coded-aperture based X-ray phase contrast imaging

2018 ◽  
Vol 83 (1) ◽  
pp. 10701 ◽  
Author(s):  
Cui Zhang ◽  
Xiaodong Pan ◽  
Hongjie Shang ◽  
Jingjie Ding ◽  
Gongping Li
Keyword(s):  
Phase Contrast ◽  
Accurate Result ◽  
Imaging Technique ◽  
Phase Contrast Imaging ◽  
Coded Aperture ◽  
Refraction Angle ◽  
Contrast Imaging ◽  
Experimental Conditions ◽  
X Ray ◽  
Maximum Value

Coded-aperture based imaging is a non-interferometric X-ray phase contrast imaging technique, which is based on the edge illumination principle. It enhances the image contrast and relaxes the requirements on experimental conditions, such as source sizes and detectors. Quantitative phase and absorption information can be retrieved by two opposite acquisitions. However, the retrieving accuracy and sensitivity depend on source conditions and experimental setups. In this paper, we present a new derivation for the laboratory-based retrieving method by using the slope at the center of the standard illumination curve. By analyzing the beam distribution on the detector with different source conditions, several corresponding extracting formulae are derived. Simulation results suggest that our extracting formulae can extract a relatively stable and accurate result of refraction angle with different X-ray sources. The sensitivity to refraction angle decreases with the increase of source size, its maximum value is determined by the sample aperture. Furtherly, sensitivity will be decreased when the detector aperture is small, because the edges of the beam are blocked by the detector mask. This work helps to choose the X-ray sources and to optimize the experimental setups, moreover, to improve the quantitative extracting accuracy of the refraction angle.

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