Image showing endovascular embolization

In endovascular embolization, your doctor inserts a long, thin tube (catheter) into a leg artery and threads it through blood vessels to your brain using X-ray imaging. Your surgeon positions the catheter in one of the feeding arteries to the AVM, and injects an embolizing agent, such as small particles or a glue-like substance, to block the artery and reduce blood flow into the AVM.