In Silico Trials On RF-Induced Hazards For Patients With Cerebral Stents Exposed to 1.5 T and 3.0 T MRI

Motivation: Lack of research on RF-induced heating in cerebral regions emphasizes the need for investigation, as surface curvature of brain, anatomical differences, and stent orientation across blood vessels in human models affect heating. Goal(s): Study the correlation of RF-induced heating and electric fields in the brain region at 1.5T and 3T MRI. Approach: EM simulations are performed along trajectories of sagittal sinus vein and internal carotid artery, with uniform vessel structures modeled for precision. Results: The heating correlates with tangential electric fields, but correlation coefficients vary between human models. This implies that heating is influenced by vessel anatomy, local tissues, and stent placement. Impact: This study highlights the importance of patient-specific in silico simulations to accurately predict RF-induced heating in cerebral stents during MRI. It demonstrates how anatomical variations, stent placement, and surrounding tissue properties influence heating, crucial for ensuring patient safety.