3D algebraic iterative reconstruction for cone-beam X-Ray differential phase-contrast computed tomography

Fu J, Hu X, Velroyen A, Bech M, Jiang M, Pfeiffer F (2015)

Publication Type: Journal article

Publication year: 2015

Journal

PLoS ONE Public Library of Science

Book Volume: 10

Article Number: e0117502

Journal Issue: 3

DOI: 10.1371/journal.pone.0117502

Abstract

Due to the potential of compact imaging systems with magnified spatial resolution and contrast, cone-beam x-ray differential phase-contrast computed tomography (DPC-CT) has attracted significant interest. The current proposed FDK reconstruction algorithm with the Hilbert imaginary filter will induce severe cone-beam artifacts when the cone-beam angle becomes large. In this paper, we propose an algebraic iterative reconstruction (AIR) method for cone-beam DPC-CT and report its experiment results. This approach considers the reconstruction process as the optimization of a discrete representation of the object function to satisfy a system of equations that describes the cone-beam DPC-CT imaging modality. Unlike the conventional iterative algorithms for absorption-based CT, it involves the derivative operation to the forward projections of the reconstructed intermediate image to take into account the differential nature of the DPC projections. This method is based on the algebraic reconstruction technique, reconstructs the image ray by ray, and is expected to provide better derivative estimates in iterations. This work comprises a numerical study of the algorithm and its experimental verification using a dataset measured with a three-grating interferometer and a mini-focus x-ray tube source. It is shown that the proposed method can reduce the cone-beam artifacts and performs better than FDK under large cone-beam angles. This algorithm is of interest for future cone-beam DPC-CT applications.

Involved external institutions

Beihang University, Beijing University of Aeronautics and Astronautics (BUAA) / 北京航空航天大学 CN China (CN) Technische Universität München (TUM) DE Germany (DE) Peking University (PKU) / 北京大学 CN China (CN)

How to cite

APA:

Fu, J., Hu, X., Velroyen, A., Bech, M., Jiang, M., & Pfeiffer, F. (2015). 3D algebraic iterative reconstruction for cone-beam X-Ray differential phase-contrast computed tomography. PLoS ONE, 10(3). https://doi.org/10.1371/journal.pone.0117502

MLA:

Fu, Jian, et al. "3D algebraic iterative reconstruction for cone-beam X-Ray differential phase-contrast computed tomography." PLoS ONE 10.3 (2015).

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