Abstract #2874

Overdiscrete Correction of B 0 Inhomogeneity in Accelerated 1 H FID-MRSI at 7T

Thomas Kirchner ¹ , Ariane Fillmer ¹ , Klaas P Pruessmann ¹ , and Anke Henning ^1,2

¹ Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland, ² Max Planck Institute for Biological Cybernetics, Tuebingen, Germany

Residual B ₀ inhomogeneity after shimming leads to incoherent spatial averaging due to phase and frequency variations over the FOV. We extended the previously introduced Overdiscretized Target-Driven MRSI reconstruction method to take B ₀ variations into account in a quasi-continuous manner. A gain in SNR is achieved compared to conventional voxel-wise B ₀ correction.

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