Evaluating External Fixation Devices for MRI Safety

MED Institute

External fixation devices used to provide stability and alignment for fractured bones behave differently in the magnetic resonance environment than internal implants. External fixation devices can show unique characteristics with respect to radiofrequency (RF)-induced heating. For example, the conductivity of the external components in air can cause a high temperature rise in the anchorage elements residing in the bone and surrounding tissue. Therefore, external fixation devices should be evaluated for MRI safety and subsequently labeled appropriately. This white paper details how to successfully use validated computational modeling and simulation (CM&S) to determine the worst-case configuration for RF-induced heating.

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