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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