Keywords: Safety, Safety, dental MRI, RF safety, intraoral coil, simulation
Motivation: In dental applications intraoral coils (IOCs) offer higher SNR than external surface coils, but the details of RF-induced heating of an intraoral coil dependent on many factors such as coil size, shape, incident E-field, surrounding tissue, and acquisition protocol.
Goal(s): This study investigates the effect of anatomical model complexity on SAR simulations for IOCs.
Approach: Numerical simulations were compared to electric field mapping and temperature measurements to evaluate RF-induced heating of various IOCs.
Results: RF heating and SAR simulations of IOCs can be performed with limited tissue models, but the required complexity of the tissue model depends on the coil type.
Impact: The complexity of numerical simulations can be reduced to limited tissues while maintaining accuracy of SAR estimation to determine the safety of intraoral coils through hotspot detection.
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