Credit: Cedars-Sinai
In the EDAS (encephaloduroarteriosynangiosis) operation, surgeons reroute a scalp artery and place it near the surface of the brain in need of additional blood flow (Panel A). They put the bone flap back in place (Panel B). Over time, branches grow from the artery, providing new pathways for brain circulation (Panel C). Panel D displays an angiogram of a patient's brain six months after the surgery, showing the new paths created (white arrows).