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Phys Med Biol. 2011 Jul 21;56(14):4529-38. doi: 10.1088/0031-9155/56/14/019. Epub 2011 Jun 30.

A reconstruction method for equidistant fan beam differential phase contrast computed tomography.

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  • 1Research Center of Digital Radiation Imaging and Biomedical Imaging, Beijing University of Aeronautics and Astronautics, Beiijng, People's Republic of China.


We report a reconstruction method, called a back-projection filtered (BPF) algorithm, for fan beam differential phase contrast computed tomography (DPC-CT) with equidistant geometrical configuration. This work comprises a numerical study of the algorithm and its experimental verification with a three-grating interferometer and an x-ray tube source. The numerical simulation and experimental results demonstrate that the proposed method can deal with several classes of truncated datasets. It could be of interest in future medical phase contrast imaging applications.

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