Reducing streak artifacts in computed tomography via sparse representation in coupled dictionaries.

Journal: Medical physics
Published Date: Mar 1, 2016

Abstract

PURPOSE: Reducing the number of acquired projections is a simple and efficient way to reduce the radiation dose in computed tomography (CT). Unfortunately, this results in streak artifacts in the reconstructed images that can significantly reduce their diagnostic value. This paper presents a novel algorithm for suppressing these artifacts in 3D CT.

Authors

  • Davood Karimi
    Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
  • Rabab Ward
    Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.

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