Before doing endovenous thermal ablation, the skin and surrounding tissues are numbed. The proceduralist would make a smaller cut in the skin into which he or she inserts a extremely slim tube termed a catheter. The catheter is guided into the vein to be treated working with ultrasound imaging. The proceduralist applies radiofrequency or laser electricity to the enlarged vein via the catheter’s suggestion. As the catheter is pulled out, the warmth causes the vein to collapse and eventually heal shut. The blood will then reroute by means of other veins.