In a bi-pole or dual lesion setup, how does the doctor place the needles?

In a bi-pole or dual lesion setup, the correct approach is that one probe acts as an active probe while the second serves as a return probe. This method is fundamental in various therapeutic and diagnostic applications, as it allows for targeted delivery of energy or treatment to the specific area of interest while establishing a circuit that can facilitate the flow of current or energy.

This arrangement is important because it not only enhances the effectiveness of the treatment by ensuring focused application but also safely manages the electrical activity, reducing the risk of complications. The active probe delivers the therapeutic effect, while the return probe completes the circuit, allowing for proper energy dispersion.

The other options either suggest incorrect methodologies or lack specificity. For example, delivering energy simultaneously from both probes would not create a defined active-return setup, resulting in less effective treatment. Using two active probes without a return would not complete the electrical circuit, which is critical for achieving the desired therapeutic effect. Lastly, placing needles randomly without a specific positioning would miss the structured approach necessary for effective treatment outcomes. Thus, the arrangement of one active probe and one return probe is essential for efficacy and safety in bi-pole or dual lesion setups.