Dr. Hakan Ay is a clinical neurologist who is appointed by departments of Neurology and Radiology at the Massachusetts General Hospital, Harvard Medical School. Dr. Ay is specialized in stroke and cerebrovascular disorders. Dr. Ay`s research at the A.A. Martinos Center involves using imaging to investigate the clinic-anatomic-functional relationships in ischemic brain injury. Dr. Ay has developed various MRI-based methods to map clinical deficits using non-a priori anatomical hypotheses, to identify stroke etiology, and to predict tissue and clinical outcome following ischemic stroke. Dr. Ay`s other research interests include transient ischemic attacks, neurocardiology, stroke recovery, and genetic and plasma markers of ischemic brain injury.