Dr. Christer Lindquist, MD, PhD, is a neurosurgeon trained at the University of Texas and the Karolinska Institute. Prof. Lars Leksell and Prof. Ladislau Steiner were his teachers. He was the Head of Services for the Gamma Knife Center and Professor of Neurosurgery and Course Chief at the New England Gamma Knife Center at Brown University, England. Prof. Lindquist is the founding president of the Leksell Gamma Knife Society and is the president of the International Society for Radiosurgery (SSRI). He is currently medical director of the Cromwell Gamma Knife Center in London, England.