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Abstract #0386

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

Eduardo Coello1,2, 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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