In Radiofrequency Ablation (RFA), the doctor inserts a small catheter into the diseased vein through a small incision under ultrasound guidance for a live view. Consistent and uniform heat is delivered to contract collagen in the vein.
No hospitalization is required, and patients are back on their feet immediately following the procedure.
https://www.usaveinclinics.com/treatments/varicose-vein-treatment/radiofrequency-ablation-rfa-treatment/