RF lesion size formation is influenced by which of the following factors?

RF lesion size formation is influenced by which of the following factors?

• A. All of the above
• B. Electrode size
• C. Time
• D. Power

Answer: (A)

RF lesion size is driven by how much energy is delivered to tissue and how that energy is distributed. Power sets the rate at which energy is delivered, while time determines how long the tissue stays heated. The product of power and time reflects the total energy deposited, which influences how far heat spreads and how large the lesion becomes. Electrode size changes the area over which energy is applied and the current density: a larger electrode heats a broader area and tends to produce a bigger lesion, whereas a smaller electrode concentrates energy over a smaller zone. Put together, electrode size, time, and power collectively shape the final lesion dimensions, so all of these factors contribute to lesion size.

RF lesion size is driven by how much energy is delivered to tissue and how that energy is distributed. Power sets the rate at which energy is delivered, while time determines how long the tissue stays heated. The product of power and time reflects the total energy deposited, which influences how far heat spreads and how large the lesion becomes. Electrode size changes the area over which energy is applied and the current density: a larger electrode heats a broader area and tends to produce a bigger lesion, whereas a smaller electrode concentrates energy over a smaller zone. Put together, electrode size, time, and power collectively shape the final lesion dimensions, so all of these factors contribute to lesion size.