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Open Engineering

formerly Central European Journal of Engineering

Editor-in-Chief: Noor, Ahmed

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CiteScore 2016: 0.70

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2391-5439
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Mitigating motion artifacts in FDK based 3D Cone-beam Brain Imaging System using markers

Ujjal Bhowmik
  • Department of Electrical and Computer Engineering, University of Alabama in Huntsville, Huntsville, AL, 35899, USA
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/ M. Zafar Iqbal
  • Department of Computer Science and Engineering, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
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/ Reza Adhami
  • Department of Electrical and Computer Engineering, University of Alabama in Huntsville, Huntsville, AL, 35899, USA
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Published Online: 2012-07-01 | DOI: https://doi.org/10.2478/s13531-012-0011-7

Abstract

Head motion during Computed Tomographic (CT) brain imaging studies can adversely affect the reconstructed image through distortion, loss of resolution and other related artifacts. In this paper, we propose a marker based innovative approach to detect and mitigate motion artifacts in three dimensional cone-beam brain CT systems without using any external motion tracking sensor. Motion is detected using correlations between the adjacent projections. Once motion is detected, motion parameters (i.e. six degrees-of-freedom of motions) are estimated using a numerical optimization technique. Artifacts, caused by motions, are mitigated by using a modified form Feldkemp-Davis-Kress (FDK) algorithm which uses the estimated motion parameters in back-projection stage. The proposed approach has been evaluated on a modified three-dimensional Shepp-Logan phantom with a range of simulated motions. Simulation results demonstrate a quantitative and qualitative validation of motion detection and artifacts mitigation technique.

Keywords: Three-dimensional CT; FDK algorithm; Cone-beam CT; Motion detection; Motion artifacts

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About the article

Published Online: 2012-07-01

Published in Print: 2012-09-01


Citation Information: Open Engineering, ISSN (Online) 2391-5439, DOI: https://doi.org/10.2478/s13531-012-0011-7.

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© 2012 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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