RF-induced heating of implants or devices can be controlled through manipulation of their termination impedance which is dependent on the dielectric properties of the medium and the incident field configurations. We designed a wireless module that modifies the input impedance of an active catheter to keep the temperature increase below a threshold, ΔTmax. The wireless module monitors local heating at the tip of the catheter or can receive data from an external temperature measurement device to search for the optimal impedance that minimizes temperature rise. RF transmission is blocked via a feedback system when ΔTmax is exceeded.
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