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28 May 2019 Reduction of beam hardening induced metal artifacts using consistency conditions
Shiras Abdurahman, Robert Frysch, Georg Rose
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Proceedings Volume 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine; 110721S (2019) https://doi.org/10.1117/12.2534677
Event: Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 2019, Philadelphia, United States
Abstract
Metal artifacts are increasingly prevalent in CT reconstructed volumes due to the presence of implants in the aging population. High degree of beam hardening in severely attenuating objects is one of the main contributors of strong metal artifacts. In this paper, we propose a method to reduce metal artifacts due to beam hardening by enforcing consistency conditions on the uncorrected polychromatic projections. Our results from clinical datasets show the reduction of artifacts after the proposed correction.
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Shiras Abdurahman, Robert Frysch, and Georg Rose "Reduction of beam hardening induced metal artifacts using consistency conditions", Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110721S (28 May 2019); https://doi.org/10.1117/12.2534677
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KEYWORDS
CT reconstruction
Computed tomography
Radon transform
X-rays
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