I had to google this. Interesting! I hope it works out well for you. I assume it's still in clinical trials.

For others wondering, my understanding is that based on a high-quality mpMRI and subsequent guided biopsy, one (or perhaps more?) node is identified as of concern and needles are inserted, guided by ultrasound based on the mpMRI map, so that the node can be ablated (neutralized, killed) using a pulsed electrical current travelling between the needles.

So it's a form of ablation (localized killing) using high voltage electrical pulses that kill the cells without burning them.