Endovascular embolization

In endovascular embolization, a long, thin tube (catheter) is inserted into a leg artery and is threaded through blood vessels to the brain using X-ray imaging. The surgeon positions the catheter in one of the arteries that feeds 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.