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Abstract #2798

A Practically Feasible Approach to SAR-Constrained Patient-Specific B1+ Shimming in 7T Head Imaging Based on Generic SAR Behavior.

Martijn de Greef1, Ozlem Ipek2, Alexander Raaijmakers2, Hans Crezee3, Nico van den Berg2

1Image Sciences Institute, University Medical Center Utrecht, Utrecht, Netherlands; 2Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands; 3Radiotherapy, Academic Medical Center, University of Amsterdam, Amsterdam, Noord-Holland, Netherlands

Generic SAR behavior in MRI of the head was studied to evaluate whether patient-specific SAR models which are consuming to construct may be replaced by a generic SAR model. Patient-specific SAR constrained B1+ shimming was performed with generic SAR models. This approach was found to be well suitable for patient-specific B1+ shimming compliant with SAR safety norms at a minimal expense of increased B1+ heterogeneity.