Abstract #0912

SAR-reduced Asymmetric tr-FOCI for PICORE-ASL

Didi Chi^1,2, Yasmin Blunck^1,2, Rebecca Glarin², Catherine E. Davey^1,2, Josef Pfeuffer³, Daniel Staeb³, Jin Jin³, and Leigh A. Johnston^1,2

¹Department of Biomedical Engineering, University of Melbourne, Parkville, Australia, ²Melbourne Brain Centre Imaging Unit, University of Melbourne, Parkville, Australia, ³MR Research Collaborations, Siemens Healthcare Pty Ltd, Melbourne, Australia

Synopsis

PICORE-ASL using tr-FOCI pulses during labelling typically generates high power deposition at 7T. The current study introduces an asymmetric tr-FOCI pulse for PICORE-ASL to achieve SAR reduction. Results from simulations, phantom and in vivo experiments demonstrate the SAR reduction that can be achieved by using the asymmetric pulses without sacrificing inversion efficiency, slice profiles or CBF measurement.

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