Abstract #0386

Overdiscrete Reconstruction in Echo-Planar Spectroscopic Imaging with Auto Calibrated B0 Field Map Estimation

Eduardo Coello^1,2, Martin Janich², Timo Schirmer², Ralf Noeske³, Tamas Borbath², Axel Haase¹, and Rolf Schulte²

¹Technische Universität München, Munich, Germany, ²GE Global Research, Garching, Germany, ³GE Healthcare, Potsdam, Germany

An overdiscrete reconstruction for in-vivo 3D Echo-Planar Spectroscopic Imaging (EPSI) data is used for SNR improvement and voxel bleeding reduction. We propose the estimation of a B₀ field map, which is needed for the reconstruction, using the residual water signal in the dataset. A mean SNR enhancement of a factor of 2.8 was achieved for NAA and comparable reconstruction results were obtained with both the measured and the estimated B₀ field maps.

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