Medicare Supplement plans (Medigap coverage) overview. Medicare Supplement (also known as MedSup or Medigap) coverage, is health insurance sold by private insurance companies to fill the âgapsâ in Medicare Part A and Part B coverage.
Radiofrequency ablation (RFA) is a minimally invasive procedure that destroys cancerous tumors. Pulses of radiofrequency energy are sent through a catheter (a long, thin tube) to heat and destroy diseased tissue. Currently, RFA is a standard treatment for patients with inoperable liver tumors.
Radiofrequency Ablation (RFA) of Liver Tumors. 1  Radiofrequency ablation (RFA) is a treatment that uses imaging guidance to place a needle electrode through the skin into a liver tumor. High-frequency electrical currents are passed through the electrode, creating heat that destroys the cancer cells. 2  Your doctor will instruct you on how to prepare.