X Ray Phase Contrast Imaging for the Extreme Low Density or Weak Absorption Materials

2011 ◽  
Vol 366 ◽  
pp. 322-325
Author(s):  
Jie Wu ◽  
Jia Bi Chen ◽  
Xue Long Zhang
Keyword(s):  
Modulation Transfer Function ◽  
Phase Contrast ◽  
Source Size ◽  
Phase Contrast Imaging ◽  
Low Density ◽  
Modulation Transfer ◽  
Contrast Imaging ◽  
Function Model ◽  
Weak Absorption ◽  
X Ray

In order to get better images from the extreme low density or weak absorption materials, a new modulation transfer function model is established for the X ray phase contrast imaging. Then the parameter effects of ray source size are elaborated on the basis of the partially coherent optical theory. From the simulation and calculation, the proposal and parameter optimization are revealed according to the actual materials experiment conditions.

scholarly journals Source size and temporal coherence requirements of coded aperture type x-ray phase contrast imaging systems

2010 ◽  
Vol 18 (19) ◽  
pp. 19681 ◽  
Author(s):  
Peter R. T. Munro ◽  
Konstantin Ignatyev ◽  
Robert D. Speller ◽  
Alessandro Olivo
Keyword(s):  
Phase Contrast ◽  
Temporal Coherence ◽  
Source Size ◽  
Imaging Systems ◽  
Phase Contrast Imaging ◽  
Coded Aperture ◽  
Contrast Imaging ◽  
X Ray

Low density contrast agents for x-ray phase contrast imaging: the use of ambient air for x-ray angiography of excised murine liver tissue

2008 ◽  
Vol 53 (23) ◽  
pp. 6911-6923 ◽  
Author(s):  
Christopher M Laperle ◽  
Theron J Hamilton ◽  
Philip Wintermeyer ◽  
Evan J Walker ◽  
Daxin Shi ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Liver Tissue ◽  
Phase Contrast ◽  
Ambient Air ◽  
Phase Contrast Imaging ◽  
Density Contrast ◽  
Low Density ◽  
Contrast Imaging ◽  
X Ray ◽  
Murine Liver

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.

Numerical analysis of shift error in X-ray phase contrast imaging for large field of view

2017 ◽  
Vol 34 (1) ◽  
pp. 8
Author(s):  
Jianheng Huang ◽  
Yaohu Lei ◽  
Xin Liu ◽  
Jinchuan Guo ◽  
Ji Li ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Phase Contrast ◽  
Field Of View ◽  
Phase Contrast Imaging ◽  
Large Field ◽  
Contrast Imaging ◽  
X Ray
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