Abstract #0952

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

Gilbert Hangel¹, Philipp Moser¹, Bernhard Strasser², Michal Považan^3,4, Eva Hečková¹, Lukas Hingerl¹, Stanislav Motyka¹, Stephan Gruber¹, Beáta Bachratá¹, Benedikt A Poser⁵, Christopher Wiggins⁶, Sahar Nassirpour⁷, Paul Chang⁷, Siegfried Trattnig^1,8, 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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