scholarly journals Simulations of x-ray speckle-based dark-field and phase-contrast imaging with a polychromatic beam

2015 ◽  
Vol 118 (11) ◽  
pp. 113105 ◽  
Author(s):  
Marie-Christine Zdora ◽  
Pierre Thibault ◽  
Franz Pfeiffer ◽  
Irene Zanette
Keyword(s):  
Phase Contrast ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Polychromatic Beam

scholarly journals Detection of individual sub-pixel features in edge-illumination x-ray phase contrast imaging by means of the dark-field channel

2019 ◽  
Vol 53 (9) ◽  
pp. 095401
Author(s):  
Norihito Matsunaga ◽  
Kazuhiro Yano ◽  
Marco Endrizzi ◽  
Alessandro Olivo
Keyword(s):  
Phase Contrast ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

scholarly journals Factors Affecting the Spatial Resolution in 2D Grating–Based X-Ray Phase Contrast Imaging

2021 ◽  
Vol 9 ◽  
Author(s):  
Siwei Tao ◽  
Congxiao He ◽  
Xiang Hao ◽  
Cuifang Kuang ◽  
Xu Liu
Keyword(s):  
Spatial Resolution ◽  
Phase Contrast ◽  
Imaging System ◽  
Diffraction Theory ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Transform Method ◽  
Factors Affecting ◽  
X Ray

X-ray phase contrast imaging is a promising technique in X-ray biological microscopy, as it improves the contrast of images for materials with low electron density compared to traditional X-ray imaging. The spatial resolution is an important parameter to evaluate the image quality. In this paper, simulation of factors which may affect the spatial resolution in a typical 2D grating–based phase contrast imaging system is conducted. This simulation is based on scalar diffraction theory and the operator theory of imaging. Absorption, differential phase contrast, and dark-field images are retrieved via the Fourier transform method. Furthermore, the limitation of the grating-to-detector distance in the spatial harmonic method is discussed in detail.

scholarly journals X-ray dark-field and phase-contrast imaging using a grating interferometer

2009 ◽  
Vol 105 (10) ◽  
pp. 102006 ◽  
Author(s):  
F. Pfeiffer ◽  
M. Bech ◽  
O. Bunk ◽  
T. Donath ◽  
B. Henrich ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Grating Interferometer

scholarly journals X-ray dark-field phase-contrast imaging: Origins of the concept to practical implementation and applications

2020 ◽  
Author(s):  
Masami Ando ◽  
Rajiv Gupta ◽  
Akari Iwakoshi ◽  
Jong-Ki Kim ◽  
Daisuke Shimao ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Practical Implementation ◽  
Field Phase ◽  
Contrast Imaging ◽  
X Ray

scholarly journals Improved Detection of Foreign Bodies on Radiographs Using X-ray Dark-Field and Phase-Contrast Imaging

2018 ◽  
Vol 53 (6) ◽  
pp. 352-356 ◽  
Author(s):  
Katharina Hellbach ◽  
Ebba Beller ◽  
Andreas Schindler ◽  
Franziska Schoeppe ◽  
Nina Hesse ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Foreign Bodies ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

Crystal analyser-based X-ray phase contrast imaging in the dark field: implementation and evaluation using excised tissue specimens

2013 ◽  
Vol 24 (2) ◽  
pp. 423-433 ◽  
Author(s):  
Masami Ando ◽  
Naoki Sunaguchi ◽  
Yanlin Wu ◽  
Synho Do ◽  
Yongjin Sung ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Dark Field ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Tissue Specimens ◽  
Excised Tissue

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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