Keywords: High-Field MRI, SafetyHome-built RF UHF MRI coils have to be carefully evaluated for safety issues. This is performed by simulating the coil model, which often include thin conductors, loaded by a human voxel model. Currently such models are available mainly for time-domain solvers. Fine mesh over conductors and the large voxel model may lead to time-consuming simulations. Therefore, for smaller head-sized coils, the model has to be cut and the proper mesh size chosen. In this work, we numerically investigated the dependence of B1+ and SAR for four different head coils on fine local meshing and the size of the voxel model.
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