A brain aneurysm -- a weakened or bulging portion of an artery in the brain -- can be emergent or stable. If a rupture has occurred, our neurosurgeons work quickly to repair damage and reduce the risk of complications like subarachnoid hemorrhages. If your brain aneurysm is stable, small, and has not ruptured, Duke radiologists, neurologists, and neurosurgeons use sophisticated imaging tools to determine whether you will benefit from observation or treatment. We perform open surgery or complex, minimally invasive catheter procedures to repair aneurysms.