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Algorithm Study on Reconstruction of Refractive Angles in Fan Beam Diffraction Enhanced Computed Tomography |
| WANG Min1;CEN Yu-Wan1;ZHU Pei-Ping2;HU Xiao-Fang3;YU Xiao-Liu1 |
| 1School of Mechanical Engineering, Anhui University of Technology, Maanshan 2430022Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 1000493CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026 |
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WANG Min, CEN Yu-Wan, ZHU Pei-Ping et al 2008 Chin. Phys. Lett. 25 1026-1029 |
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Abstract Based on the 360°computing method of refractive angle for parallel beam diffraction enhanced imaging computed tomography (DE-CT) technique, a new algorithm used to calculate the refractive angle for fan-beam DE-CT technique is developed. The refractive index gradient can be obtained by using the new algorithm with projection data of an object in the range of 0-360°, and the new algorithm only needs to set the analyser at half slope position of the rocking curve.
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| Keywords:
61.10.Nz
87.59.Fm
87.59.Bh
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Received: 26 December 2007
Published: 27 February 2008
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