The primary contribution of this work is the extensive studies of medical devices RF-induced heating problems in MRI systems. Full-wave electromagnetic simulation and thermal simulation tools are used to find a correlation between device length and the maximum temperature increment around the device tip. Measurement results for the worst-case heating scenario are in good agreement with simulation data. The work proposed an efficient and accurate method to evaluate the MRI RF-induced heating effect for a device family with a large number of length variation.

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