Keywords: Safety, Safety, Titanium Mesh Head Implant, 7T, RF Coil Safety
Motivation: The RF safety risks associated with titanium mesh head implants are not well assessed for 7T MRI preventing patients undergoing craniofacial surgery from being scanned.
Goal(s): To evaluate the RF heating caused by titanium mesh head implants at 7T MRI.
Approach: A titanium mesh implant was 3D scanned to generate a CAD model. Electromagnetic and thermal simulations were conducted in phantoms and anatomical human models. Simulation models were validated with experimental measurements.
Results: The introduction of titanium mesh implants may increase the local 1g-average SAR and temperatures near the mesh edges. The maximum absolute temperature in the head remained the same.
Impact: Imaging titanium mesh head implants for skull reconstruction procedures may be safe for MR scan at 7T following the IEC guidelines.
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