Prof. Dr. med. Bodo Lippitz is a specialist in the Gamma Knife treatment of benign and malignant brain tumours and of arterio-venous malformations, with 30 years of clinical experience. He has had extensive training in stereotactic and microsurgical techniques, and has been the Director of the Karolinska Gamma Knife Center, Co-Director of the Bupa Cromwell Hospital Gamma Knife Centre, and Professor of Neurosurgery at the University Aachen, and President of the European Gamma Knife Society.