Resolution enhancement phase-contrast imaging by microsphere digital holography

2016 ◽  
Vol 366 ◽  
pp. 81-87 ◽  
Author(s):  
Yunxin Wang ◽  
Sha Guo ◽  
Dayong Wang ◽  
Qiaowen Lin ◽  
Lu Rong ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Digital Holography ◽  
Resolution Enhancement ◽  
Phase Contrast Imaging ◽  
Contrast Imaging

Digital holography for quantitative phase-contrast imaging

1999 ◽  
Vol 24 (5) ◽  
pp. 291 ◽  
Author(s):  
Etienne Cuche ◽  
Frédéric Bevilacqua ◽  
Christian Depeursinge
Keyword(s):  
Phase Contrast ◽  
Digital Holography ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Quantitative Phase

Phase-Contrast Imaging by the Continuous-Wave Terahertz In-Line Digital Holography

2014 ◽  
Vol 41 (8) ◽  
pp. 0809003
Author(s):  
王大勇 Wang Dayong ◽  
黄昊翀 Huang Haochong ◽  
周逊 Zhou Xun ◽  
戎路 Rong Lu ◽  
李赜宇 Li Zeyu ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Digital Holography ◽  
Continuous Wave ◽  
Phase Contrast Imaging ◽  
Contrast Imaging

Applications of electron holography to multilayer interfaces

1991 ◽  
Vol 49 ◽  
pp. 674-675
Author(s):  
J. K. Weiss ◽  
W. J. de Ruijter ◽  
M. Gajdardziska-Josifovska ◽  
David J. Smith ◽  
E. Voelkl ◽  
...  
Keyword(s):  
High Resolution ◽  
Phase Contrast ◽  
Resolution Enhancement ◽  
Magnetic Domain ◽  
Multilayer Films ◽  
Phase Contrast Imaging ◽  
Electron Holography ◽  
Contrast Imaging ◽  
Low Contrast ◽  
Domain Structures

Electron holography has received renewed interest recently as a means of resolution enhancement in high resolution phase contrast imaging and as a technique for imaging microscopic magnetic domain structures. Some of the original applications of the technique involved measurement of the absolute mean inner potential in films of known thickness. This approach has now been extended in order to gain information about changes in elemental concentrations at interfaces in multilayer films.The abruptness of interfaces in multilayer films used for X-ray mirrors strongly affects their reflective properties. Previous studies using high resolution phase contrast imaging have shown that this interface diffuseness can be imaged, but typically with low contrast and an unknown contribution from amplitude contrast effects. The differences in mean inner potential between successive layers suggests that the variation of the mean inner potential across the interface should be a good measurement of the change in elemental concentration.

Image Quality Analysis of X-ray Grating Interferometer Using Integrating-bucket Method

2020 ◽  
Vol 64 (2) ◽  
pp. 20503-1-20503-5
Author(s):  
Faiz Wali ◽  
Shenghao Wang ◽  
Ji Li ◽  
Jianheng Huang ◽  
Yaohu Lei ◽  
...  
Keyword(s):  
Image Quality ◽  
Phase Contrast ◽  
Quality Analysis ◽  
Phase Contrast Imaging ◽  
Phase Image ◽  
Contrast Imaging ◽  
High Quality ◽  
Image Quality Analysis ◽  
X Ray ◽  
Grating Interferometer

Abstract Grating-based x-ray phase-contrast imaging has the potential to enhance image quality and provide inner structure details non-destructively. In this work, using grating-based x-ray phase-contrast imaging system and employing integrating-bucket method, the quantitative expressions of signal-to-noise ratios due to photon statistics and mechanical error are analyzed in detail. Photon statistical noise and mechanical error are the main sources affecting the image noise in x-ray grating interferometry. Integrating-bucket method is a new phase extraction method translated to x-ray grating interferometry; hence, its image quality analysis would be of great importance to get high-quality phase image. The authors’ conclusions provide an alternate method to get high-quality refraction signal using grating interferometer, and hence increases applicability of grating interferometry in preclinical and clinical usage.

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