Medical Technologies in Neurosurgery This Acta Neurochirurica supplement distills the accomplishments of the Joint Convention of the Academia Eurasania Nuerochirurgica and the German Academy of Neurosurgery held in Bamberg Germany from Sept. 1 3 2005. The main focus is Medical Technologies for Neurosurgery including: imaging image processing robotics workflow analysis and ethics. Coverage extends from an overview of medical technologies to robotic assisted systems in neurosurgical operating rooms to intraoperative MRI. Discusses ethical considerations regarding applications of technologies as well as varying religious viewpoints concerning this topic. This work offers an overview on the state of medical technologies which is followed by an example of a typical image processing problem. It also focuses on robotics applications