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Proceedings Paper

Beam hardening correction using pair-wise fan beam consistency conditions
Author(s): Shiras Abdurahman; Robert Frysch; Steffen Melnik; Georg Rose
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Paper Abstract

The polychromatic X-ray spectrum and the energy-dependent material attenuation coefficients generate beam hardening artifacts in CT reconstructed images. The artifacts can be corrected by projection linearization using polynomials. Recently, consistency conditions derived from Grangeat’s fundamental relation have been successfully employed for estimating the correction polynomials without calibration or prior knowledge. In this paper, we show that the polynomials can also be computed by enforcing pair-wise fan beam consistency conditions on cone beam projections. Our preliminary results from simulation and real data experiments show the significant reduction of first-order artifacts after correction with the proposed method.

Paper Details

Date Published: 28 May 2019
PDF: 5 pages
Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110721T (28 May 2019); doi: 10.1117/12.2534678
Show Author Affiliations
Shiras Abdurahman, Univ. of Magdeburg (Germany)
Robert Frysch, Univ. of Magdeburg (Germany)
Steffen Melnik, Fraunhofer-Institute for Production Systems and Design Technology (Germany)
Georg Rose, Univ. of Magdeburg (Germany)


Published in SPIE Proceedings Vol. 11072:
15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine
Samuel Matej; Scott D. Metzler, Editor(s)

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