Application of a test object free method for determination of the modulation transfer function in grating-based phase-contrast imaging

2018 ◽  
Author(s):  
Janne Vignero ◽  
Hilde Bosmans ◽  
Nicholas Marshall
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Test Object ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Modulation Transfer ◽  
Contrast Imaging

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 Porosity Determination of Carbon and Glass Fibre Reinforced Polymers Using Phase-Contrast Imaging

2018 ◽  
Vol 38 (1) ◽  
Author(s):  
Christian Gusenbauer ◽  
Michael Reiter ◽  
Bernhard Plank ◽  
Dietmar Salaberger ◽  
Sascha Senck ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Reinforced Polymers ◽  
Glass Fibre Reinforced
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