Can also be used to treat some varicose and nearly all spider
veins. An extremely fine needle is used to inject the vein with a
solution which shrinks the vein.
Involves an interventional radiologist passing a thin tube
called a catheter into the vein using ultrasound guidance and
injecting substance that causes the veins to scar and close -
rerouting the blood to healthier veins. The affected vein forms a
knot of scar tissue that is absorbed by the body over time.