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Abstract #0490

Large Dynamic Range Relative B1+ Mapping

Francesco Padormo 1 , Aaron T. Hess 2 , Paul Aljabar 1 , Peter Jezzard 3 , Matthew D. Robson 2 , Joseph V. Hajnal 1,4 , and Peter J. Koopmans 3

1 Division of Imaging Sciences and Biomedical Engineering, King's College London, London, London, United Kingdom, 2 Department of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom, 3 FMRIB Centre, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom, 4 Centre for the Developing Brain, King's College London, London, United Kingdom

Relative B1+ mapping relies on the validity of the SPGR small flip angle approximation. This cannot be guaranteed in the presence of large B1+ dynamic range. Here we present an acquisition and reconstruction scheme which enables relative B1+ mapping in the presence of large dynamic range.

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