Abstract #4151

Parallel transmit RF safety simulation: effects of differences in tissue compartmentsbetween different voxel models

Hongbae Jeong¹, Peter Jezzard¹, and Aaron T. Hess²

¹Wellcome Centre for Integrative Neuroimaging, FMRIB Division, Nuffield Dept of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom, ²Oxford Centre for Clinical Magnetic Resonance Research, Department of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom

In this study, we demonstrate the effects on RF simulation from subtly different tissue compartments in the same morphometric space. We evaluate this by using two well-characterised electromagnetic models, Duke versions 1.0 and 3.0. Maps of 10g SAR across a range of B₁⁺shims were evaluated, showing uncertainties arising from segmentation differences. By using a dedicated voxel model, an increased confidence in electromagnetic simulation can be achieved.

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