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Endovenous thermal ablation is a minimally invasive treatment that involves the insertion of a tin flexible tube called a catheter into a diseased vein to seal it shut using heat. Blood that would normally return toward the heart through these veins will then travel through other veins instead. The treated vein then dries up, shrinks and is absorbed by the body. Two types of energy may be used:

Radiofrequency Ablation (RFA) uses radiofrequency energy to provide an even and uniform heat to contract the collagen in the vein walls, causing them to collapse and seal off.
Laser Ablation (EVLT) delivers laser energy to heat the blood, causing it to coagulate to close off the diseased vein.
The choice of treatment will be discussed with you by your treating physician. We will try to give the best choice for you based on your particular situation.