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Non-equispaced Fourier Transform Vs. Polynomial-Based Metal Artifact Reduction in Computed Tomography

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Bildverarbeitung für die Medizin 2008

Part of the book series: Informatik aktuell ((INFORMAT))

Abstract

We propose a method, which treats metal artifact reduction in CT by sinogram restoration as a problem of scattered data interpolation. Corrupted sinogram entries are discarded and replaced with artificially generated values. The presented interpolation algorithm is based on the 2D non-equispaced fast Fourier transform (NFFT). Results are compared to two common polynomial interpolation schemes.

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References

  1. Potts D, Steidl G, Tasche M. Fast Fourier transforms for non-equispaced data: A tutorial. In: Modern Sampling Theory: Mathematics and Applications. Birkhäuser, Boston; 2001. p. 247–70.

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Author information

Authors and Affiliations

  1. Institute of Medical Engineering, University of Lübeck, 23538, Lübeck, Germany

    Bärbel Kratz, Tobias Knopp, Jan Müller, May Oehler & Thorsten M. Buzug

Authors
  1. Bärbel Kratz
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  2. Tobias Knopp
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  3. Jan Müller
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  4. May Oehler
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  5. Thorsten M. Buzug
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Editor information

Editors and Affiliations

  1. Campus Benjamin Franklin Institut für Medizinische Informatik, Charité — Universitätsmedizin Berlin, Hindenburgdamm 30, 12200, Berlin

    Thomas Tolxdorff  & Jürgen Braun  & 

  2. Institut für Medizinische Informatik, Rheinisch-Westfälische Technische Hochschule Aachen, Pauwelsstraße 10, 52074, Aachen

    Thomas M. Deserno

  3. Klinikum rechts der Isar Institut für Medizinische Statistik und Epidemiologie, Technische Universität München, Ismaninger Straße 22, 81675, München

    Alexander Horsch

  4. Institut für Medizinische Informatik, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg

    Heinz Handels

  5. Abteilung für Medizinische und Biologische Informatik / H0100, Deutsches Krebsforschungszentrum, Im Neuenheimer Feld 280, 69120, Heidelberg

    Hans-Peter Meinzer

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© 2008 Springer-Verlag Berlin Heidelberg

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Cite this paper

Kratz, B., Knopp, T., Müller, J., Oehler, M., Buzug, T.M. (2008). Non-equispaced Fourier Transform Vs. Polynomial-Based Metal Artifact Reduction in Computed Tomography. In: Tolxdorff, T., Braun, J., Deserno, T.M., Horsch, A., Handels, H., Meinzer, HP. (eds) Bildverarbeitung für die Medizin 2008. Informatik aktuell. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-78640-5_5

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