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