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Abstract #3536

Ringing Artifacts Reduction with Low-Pass Filtered Deblurring Kernels

Dinghui Wang1 and James G. Pipe1
1Radiology, Mayo Clinic, Rochester, MN, United States

Spiral imaging has been used in many applications for its fast imaging speed, high scan efficiency and low sensitivity to motion. However, ringing artifacts are often observed in regions where the field map Δf0 changes rapidly in space, especially with long spiral readouts. The goal of this work is to address this issue with a modified deblurring model that weights more on low spatial frequencies. Simulation and volunteered data have demonstrated that the ringing artifacts can be substantially reduced by the proposed method.

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