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Abstract #3421

Fully Adiabatic 31P 2D CSI with Negligible Chemical Shift Displacement Error at 7T

Marek Chmelik1, Stephan Gruber1, Siegfried Trattnig1, Wolfgang Bogner1

1MR Centre of Excellence, Department of Radiology, Medical University of Vienna , Vienna, Austria

Fully adiabatic 31P 2D CSI sequence with negligible chemical shift displacement error (CSDE) for 7T based on 1D-ISIS/2D-CSI selection was developed. Slice selective excitation was achieved by a spatially selective broadband GOIA inversion pulse prior to non selective adiabatic excitation which was followed by 2D phase encoding gradients. This reduced CSDE ~8 fold in slice direction compared to conventional 2D-CSI with Sinc3 selective pulse at 7T. The sequence allows in combination with AHP or BIR-4 excitation fully adiabatic performance suitable to be used with B1 inhomogeneous surface coils.