The procedure is simple and effectively done in-office. Using ultrasound guidance and a small IV line, a thin catheter is inserted into the target, feeder vein. Once the catheter is accurately positioned, the surrounding area is given a local anesthetic solution (tumescence). The catheter is then activated to deliver radiofrequency (RF) energy to the vein wall. The radiofrequency heats and ultimately collapses the diseased vein.