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Abstract #4965

2D Radial Acquisition Technique with Density Adaption in Sodium MRI

Simon Konstandin1, Armin Michael Nagel2, Patrick Michael Heiler1, Lothar Rudi Schad1

1Computer Assisted Clinical Medicine, Heidelberg University, Mannheim, Germany; 2Department of Medical Physics in Radiology, German Cancer Research Center, Heidelberg, Germany

A 2D projection reconstruction method with variable gradient amplitudes is proposed to cover the k-space uniformly. Simulations and sodium measurements were performed to compare a non-adapted with a density adapted radial sequence scheme in regard to SNR and blurring. A total SNR benefit of 1.37 for the adapted sequence can be reached. The new density adapted 2D radial sampling scheme provides higher SNR and less artifacts in the presence of magnetic field inhomogeneities than conventional projection reconstruction methods.