RF-induced Heating Evaluation for Passive Device in Tissue-Reduced Virtual Family Models at 1.5 T

Tissue-reduced virtual family models are developed for the RF-induced heating assessment of passive implantable medical devices. The models are developed based on the Gaussian mixture model. The RF-induced heating of four representative passive device systems is evaluated inside the original human models, tissue-reduced human models, and the ASTM phantom at three landmark positions under a 1.5 T MRI system. From the results of these simulations, it is observed that the RF-induced heating from the tissue-reduced virtual family models is highly correlated to that obtained from the original human body models. It demonstrates the feasibility of using tissue-reduced models for the RF-induced heating testing of implantable medical devices.