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Abstract #0933

Radial streaking artifact reduction using phased array beamforming

Sagar Mandava1, Mahesh B Keerthivasan1, Diego R Martin2, Maria I Altbach2, and Ali Bilgin1,2

1Electrical and Computer Engineering, University of Arizona, Tucson, AZ, United States, 2Department of Medical Imaging, University of Arizona, Tucson, AZ, United States

Streaking artifacts can occur in radial MR imaging especially in applications that require large FOVs. In abdomen MRI, the common sources of streaking are unsuppressed fat and the arms with the latter being a particularly problematic source of streaking. The standard approach to mitigate streaking is to identify, either manually or automatically, the subset of coils that are heavily contaminated by streaking artifacts and discard them prior to coil-combination. We present a simple approach to mitigate streaking artifacts that leverages phased array beamforming (spatial filtering) and demonstrate its performance on radial fast spin echo data.

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