X-ray tomography using the full complex index of refraction

We report on x-ray tomography using the full complex index of refraction recorded with a grating-based x-ray phase-contrast setup. Combining simultaneous absorption and phase-contrast information, the distribution of the full complex index of refraction is determined and depicted in a bivariate graph. A simple multivariable threshold segmentation can be applied offering higher accuracy than with a single-variable threshold segmentation as well as new possibilities for the partial volume analysis and edge detection. It is particularly beneficial for low-contrast systems. In this paper, this concept is demonstrated by experimental results.

[1]  O. Bunk,et al.  Hard x-ray phase tomography with low-brilliance sources. , 2007, Physical review letters.

[2]  Gyula Faigel,et al.  X-Ray Holography , 1999 .

[3]  J. Als-Nielsen,et al.  Elements of Modern X-ray Physics , 2001 .

[4]  F. Jiménez-Colmenero.  Healthier lipid formulation approaches in meat-based functional foods. Technological options for replacement of meat fats by non-meat fats , 2007 .

[5]  Franz Pfeiffer,et al.  Development of a prototype gantry system for preclinical x-ray phase-contrast computed tomography. , 2011, Medical physics.

[6]  O. Bunk,et al.  Phase retrieval and differential phase-contrast imaging with low-brilliance X-ray sources , 2006 .

[7]  O. Bunk,et al.  The fractional Talbot effect in differential x‐ray phase‐contrast imaging for extended and polychromatic x‐ray sources , 2008, Journal of microscopy.

[8]  Richard J. Fitzgerald,et al.  Phase‐Sensitive X‐Ray Imaging , 2000 .

[9]  C. David,et al.  Differential x-ray phase contrast imaging using a shearing interferometer , 2002 .

[10]  A. Momose.  Phase-sensitive imaging and phase tomography using X-ray interferometers. , 2003, Optics express.

[11]  Franz Pfeiffer,et al.  Quantitative x-ray dark-field computed tomography , 2010, Physics in medicine and biology.

[12]  A. Momose.  Recent Advances in X-ray Phase Imaging , 2005 .

[13]  O. Bunk,et al.  Hard-X-ray dark-field imaging using a grating interferometer. , 2008, Nature materials.

[14]  Karen Willcox,et al.  Kinetics and kinematics for translational motions in microgravity during parabolic flight. , 2009, Aviation, space, and environmental medicine.

[15]  Franz Pfeiffer,et al.  X-ray phase imaging with a grating interferometer. , 2005, Optics express.

[16]  Karen J. Olsen,et al.  X-Ray Form Factor, Attenuation and Scattering Tables (version 2.0) , 2003 .