Thyroid Radiofrequency Ablation (RFA) is performed under local anesthesia. A special needle is passed into the thyroid nodule using ultrasound-guided imaging. This method ensures that treatment will be targeted directly on the nodule. Using a radiofrequency generator, the doctor allows a controlled amount of energy to flow through the electrode into the tissue.
The radiofrequency energy ablates the nodule, and the heat is sustained for a safe, predetermined length of time, usually just a few minutes. The nodule is degenerated with the sustained RFA thermal heat, allowing the degenerated tissue to flow through as bodily waste. The ablative changes to the nodule caused by the treatment can be seen in real-time on Ultrasound by the doctors performing the procedure.