Abstract #0855

Real-Time Motion and Shim Correction by Volumetric EPI Navigators Improves 3D LASER Localized Spiral MRSI of the Brain at 3T

Wolfgang Bogner¹,², Aaron T. Hess³, Borjan Gagoski⁴, Matthew Dylan Tisdall¹, Andr J. W. van der Kouwe¹, Siegfried Trattnig², Ovidiu C. Andronesi¹

¹Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States; ²MR Center of Excellence, Department of Radiology, Medical University Vienna, Vienna, Austria; ³Department of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom; ⁴Fetal-Neonatal Neuroimaging & Developmental Science Center, Childrens Hospital Boston, Harvard Medical School, Boston, MA, United States

High-field MR spectroscopic imaging (MRSI) is limited by localization artifacts (i.e., imperfect selection profiles, chemical shift errors, B1 inhomogeneities), motion-related artifacts (i.e., position changes, phase artifacts, B0 changes, lipid artifacts), and long measurement times (i.e., causing reduced spatial coverage and low spatial resolution).