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Abstract #5042

ECG-Triggered FASTERMAP Shimming Allows for Reproducible Shim Convergence in Spinal Cord Spectroscopy

Andreas Hock1, Anke Henning2, Michael Schr3,4, Alexander Fuchs1, Spyros Kollias5, Peter Boesiger1

1University and ETH Zurich, Institute for Biomedical Engineering, Zurich, Switzerland; 2University Hospital of Zurich, Institute for Biomedical Engineering, Zurich, Switzerland; 3The Johns Hopkins University School of Medicine, 1Russel H. Morgan Department of Radiology and Radiological Science, Baltimore, MD, United States; 4Philips Healthcare, Cleveland, OH, United States; 5University Hospital of Zurich, Institute of Neuroradiology, Zurich, Switzerland

ECG-triggered FASTERMAP shimming is introduced and compared to conventional FASTERMAP shimming and shimming based on ECG-triggered B0 field mapping for single voxel proton spectroscopy at 3T. This investigation shows that the use of ECG-triggered FASTERMAP seems to be a robust and applicable method for clinical spinal cord spectroscopy. It is significantly faster than ECG-triggered B0 mapping and in contrast to the conventional FASTERMAP shimming artifacts due to pulsatile CSF flow introduced by cardiac motion may have less influence.