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Updated: May 16, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
An algebraic iterative reconstruction technique for differential X-ray phase-contrast computed tomography
Jian Fu1, Simone Schleede, Renbo Tan
1Research Center of Digital Radiation Imaging, Beijing University of Aeronautics and Astronautics, 100191 Beiijng, China. fujian706@buaa.edu.cn
Abstract:
Iterative reconstruction has a wide spectrum of proven advantages in the field of conventional X-ray absorption-based computed tomography (CT). In this paper, we report on an algebraic iterative reconstruction technique for grating-based differential phase-contrast CT (DPC-CT). Due to the differential nature of DPC-CT projections, a differential operator and a smoothing operator are added to the iterative reconstruction, compared to the one commonly used for absorption-based CT data. This work comprises a numerical study of the algorithm and its experimental verification using a dataset measured at a two-grating interferometer setup. Since the algorithm is easy to implement and allows for the extension to various regularization possibilities, we expect a significant impact of the method for improving future medical and industrial DPC-CT applications.
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