AVM Embolization is a minimally invasive procedure used to treat arteriovenous malformations (AVMs) — abnormal tangles of blood vessels that disrupt normal blood flow between arteries and veins. During the procedure, a catheter is guided into the feeding arteries of the AVM, and special materials (such as coils, glue, or particles) are injected to block the abnormal vessels. Embolization may be performed as a stand-alone treatment or before surgery/radiosurgery to reduce the risk of bleeding and complications.