3DREAM A Three-Dimensional Variant of the DREAM Sequence
Daniel Brenner 1 , Desmond H. Y. Tse 2 , Eberhard D. Pracht 1 , Thorsten Feiweier 3 , Rdiger Stirnberg 1 , and Tony Stcker 1
German Center for Neurodegenerative Diseases
(DZNE), Bonn, Germany,
Research Centre Jlich GmbH, Jlich, Germany,
AG, Healthcare Sector, Erlangen, Germany
A 3D variant of the DREAM sequence, with a spiral phase
encode view ordering, is utilized for B1 mapping at 7T.
Together with short non-selective preparation and
imaging RF pulses this enables whole volume B1 mapping
of the human head in 15s or even a single shot - which
only lasts 3s at negligible SAR levels (1%). Good
agreement is found with a reference AFI dataset with
degraded quality in a low tip angle regime due to the
low SNR of the STE* image.
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