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Abstract #3207

Simultaneous T1-weighted imaging, R2* mapping, and QSM from a multi-echo MPRAGE sequence using a radial fan-beam sampling scheme at 3 Tesla

Hongfu Sun1, M. Ethan MacDonald2, R. Marc Lebel3, and G. Bruce Pike2
1University of Queensland, Brisbane, Australia, 2University of Calgary, Calgary, AB, Canada, 3General Electric Healthcare, Calgary, AB, Canada

A multi-echo MPRAGE sequence with radial fan-beam segments is demonstrated at 3 T. The radial fan-beam sampling scheme permits any number of encoding steps by adjusting the fan size for each inversion segment, which allows longer echo time for magnetic susceptibility contrast. Simultaneous T1-weighted image, R2* map, and QSM were successfully extracted from the single acquisition and were compared with images reconstructed from standard single-echo MPRAGE and multi-echo GRE acquisitions.

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