Jonathan Knisely (Radiation Oncology, Weill Cornell School of Medicine) has a CNS-focused practice at NewYork-Presbyterian Hospital. He has directed a radiosurgical practice since 1992 and was the first to employ automated rigid 3D image registration algorithms in radiation oncology. Dr Knisely is a champion of image-guided treatment and radiosurgery, leading to his recognition as one of America’s Top Doctors by Castle Connolly. He led the Leksell Gamma Knife Society and served as the CNS scientific program committee chair for ASTRO. He serves on several editorial boards and has authored articles and chapters with the goal of improving standards of care in the radiation management of brain tumours.