An improved algorithm for rotational motion artifact suppression in MRI

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)310-317
Journal / PublicationIEEE Transactions on Medical Imaging
Issue number2
Publication statusPublished - Apr 1998
Externally publishedYes


An improved algorithm for planar rotational motion artifact suppression in standard two-dimensional Fourier transform magnetic resonance images is presented. It is shown that interpolation of acquired view data on the uncorrupted fc-space create data overlap and void regions. We present a method of managing overlap data regions, using weighted averaging of redundant data. The weights are assigned according to a priority ranking based on the minimum distance between the data set and the fc-space grid points. An iterative estimation technique for filling the data void regions, using projections onto convex sets (POCS), is also described. The method has been successfully tested using computer simulations. © 1998 IEEE.

Research Area(s)

  • Image reconstruction, MRI, POCS, Rotational motion artifacts