Which two electrode configurations are used in radiofrequency ablation?

Bipolar and unipolar electrode configurations are commonly utilized in radiofrequency ablation due to their distinct operational principles and applications.

In a bipolar configuration, two electrodes are placed in close proximity, allowing the current to flow between them. This setup confines the energy delivery to a specific area, facilitating targeted ablation and minimizing damage to surrounding tissues. This method is particularly advantageous in procedures where precision is critical, such as in the treatment of tumors.

On the other hand, the unipolar configuration utilizes a single active electrode and a grounding pad placed at a distance from the target tissue. The current travels from the active electrode through the tissue to the grounding pad. This setup can cover a larger area, making it effective for extensive tissue ablation but may entail a higher risk of collateral damage to adjacent structures.

Together, these configurations enhance the versatility and effectiveness of radiofrequency ablation procedures, allowing clinicians to choose the best approach based on the specific clinical scenario.