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

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.

• Type: Conference
• Year: 2008
• Where: BILDMED
• Authors: Bärbel Kratz, Tobias Knopp, Jan Müller 0002, May Oehler, Thorsten M. Buzug
• Keywords: Algorithms, BILDMED 2008, Polynomial Interpolation Schemes, Presented Interpolation Algorithm, Scattered Data Interpolation