Radiofrequency ablation of uterine fibroids

Ultrasound ablation and radiofrequency ablation are both physical therapy methods, both of which achieve the purpose of treatment through high temperature. But the two produce heat in different ways. Radiofrequency ablation is to insert the electrode needle into the fibroid tissue and transmit the energy to the fibroid tissue through the high-frequency vibration of the radio frequency generator, so that the charged ions in the tissue can move and generate heat by friction. Ultrasound ablation uses a focusing principle to increase the temperature at the focal point (similar to how sunlight is focused by a lens). Ultrasound for ultrasound ablation and radiofrequency for radiofrequency ablation, the physical properties of the two substances also determine the difference in the way they are applied. Ultrasound can penetrate the skin, subcutaneous tissue, and directly examine the lesions of the viscera (such as B-ultrasound commonly used in gynecology). Therefore, ultrasound ablation can take advantage of this characteristic of ultrasound to treat the body from the outside without any trauma. Radio frequency, on the other hand, has to be in contact with the body through an electrode needle to be effective. Therefore, radiofrequency ablation requires insertion of the electrode needle into the fibroid, which has certain trauma. The heat generated by ultrasonic focusing is relatively uniform, which can kill the diseased tissue evenly, while the heat generated by radiofrequency ablation through the electrode decreases with distance. The heat around the electrode is high, far from the electrode, the heat is low, so the killing of myoma is not uniform, some places killed, some places have not achieved the effect; Leading to poor treatment effect.

In conclusion: ultrasound ablation, non-invasive, heat uniformity, high effective ratio; Radiofrequency ablation, minimally invasive, heat inhomogeneity, low effective ratio.

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