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Abstract #0952

Ultra-high-resolution brain MRSI at 7T and 9.4T – A direct comparison

Gilbert Hangel1, Philipp Moser1, Bernhard Strasser2, Michal Považan3,4, Eva Hečková1, Lukas Hingerl1, Stanislav Motyka1, Stephan Gruber1, Beáta Bachratá1, Benedikt A Poser5, Christopher Wiggins6, Sahar Nassirpour7, Paul Chang7, Siegfried Trattnig1,8, and Wolfgang Bogner1

1MRCE, Medical University of Vienna, Vienna, Austria, 2Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States, 3Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, United States, 4F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, United States, 5Department of Cognitive Neuroscience, Maastricht University, Maastricht, Netherlands, 6Scannexus BV, Maastricht, Netherlands, 7MRShim GmbH, Reutlingen, Germany, 8Christian Doppler Laboratory for Clinical Molecular MR Imaging, Vienna, Austria

Despite the successful demonstration of fast ultra-high resolution MRSI at 7T and 9.4T, a direct comparison has been lacking. This study fills this gap by measuring the same FID-MRSI protocol in the same volunteer group at both field strengths within a short time frame. Our results show overall similar quality measures across field strengths, with more quantifiable metabolites but also more prevalent spectral artefacts at 9.4T.

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