Volume 106, Number 6, June 2014
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||13 June 2014|
Cone-beam differential phase-contrast laminography with x-ray tube source
1 Research Center of Digital Radiation Imaging and Biomedical Imaging (DRIBMI), Beijing University of Aeronautics and Astronautics - 100191 Beijing, China
2 Department of Physics and Institute of Medical Engineering, Technische Universität München 85748 Garching, Germany
3 Karlsruhe Institute of Technology, Institute of Microstructure Technology 76344 Eggenstein- Leopoldshafen, Germany
4 Institute of Materials Research, Helmholtz-Zentrum Geesthacht - 22607 Hamburg, Germany
5 Lund University - 22185 Lund, Sweden
Received: 9 January 2014
Accepted: 27 May 2014
We report on an x-ray cone-beam differential phase-contrast computed laminography (DPC-CL) method for tomographic reconstruction of thin and lamellar objects. We describe the specific scan geometry of DPC-CL, which consists of a Talbot-Lau grating interferometer and a lab-based x-ray tube source, and derive a filtered back-projection (FBP) reconstruction algorithm. The experimental results of a flat sphere phantom and a piece of ham demonstrate the validity of the proposed technique. The existing DPC-CL methods are based on synchrotron sources and the parallel-beam geometry. In contrast, our approach adopts a more accessible x-ray tube source and a cone-beam geometry. Therefore it significantly widens the application range of phase-contrast laminography, particularly in practical laboratory settings, beyond applications at large-scale synchrotron facilities.
PACS: 87.57.Q- – Computed tomography / 87.57.nf – Reconstruction / 07.85.Fv – X- and γ-ray sources, mirrors, gratings, and detectors
© EPLA, 2014
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