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Abstract #0575

Oscillating Radial Trajectories for Reduced Undersampling Artifacts

Rizwan Ahmad1, Lee C. Potter2, Periannan Kuppusamy1

1Davis Heart and Lung Research Institute, Department of Internal Medicine,, The Ohio State University, Columbus, OH, USA; 2Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH, USA

We have proposed an oscillating radial trajectory of k-space which significantly improves the reconstruction quality as compared to the traditional radial sampling. Adding oscillations reduces the coherency of the radial trajectory and hence minimizes the aliasing artifacts. In contrast to the other methods for generating randomized trajectories, the proposed k-space trajectories are smooth and hence easy to implement on a conventional MRI gradient coil system. We present a systematic way of generating oscillating radial trajectories and show an improvement over the traditional radial sampling using simulations.