Radiofrequency ablation is performed in-office and under ultrasound guidance. It is a minimally invasive procedure where the physician positions a catheter into the diseased vein through a small opening in the skin. A local anesthetic is administered around the vein and catheter to ensure closure, and protect surrounding tissues, while alleviating pain during the treatment. The catheter delivers heat to the vein wall, causing it to shrink and the vein to be sealed. When the disease vein is closed, the blood will reroute itself to other healthy veins. After the procedure several small bandages are placed along the vein, and a compression sock is provided to be worn for 7 days following the procedure. Most patients can resume daily activities within a few days.