Dr. Arjun Sahgal is an international clinical and research leader in the field of high precision stereotactic radiation to the brain and spine for both metastases and primary tumors. After training at the University of Toronto in radiation oncology, he completed a radiosurgery fellowship at the University of California San Francisco. He has published, as lead or as a contributor, over 300 peer reviewed papers including in high impact journals like the Journal of Clinical Oncology, Lancet Oncology, and New England Journal of Medicine. He leads the Sunnybrook Odette CNS Neuro-Oncology program that has been awarded a total of $42.5 M Cdn in funding since his leadership. He has also been the recipient of several distinguished awards and visiting professorships, served as past-meeting chairman and current officer of the International Stereotactic Radiosurgery Society (ISRS), and current steering committee member for the AOSpine Tumor Knowledge Forum. He is the principle investigator for a national Phase 3 randomized trial (SC-24) evaluating spine SBRT to conventional radiation. Currently, he serves as Deputy Chief of the Department of Radiation Oncology at the University of Toronto affiliated Sunnybrook Odette Cancer Centre. In addition, he is the director of the Sunnybrook Cancer Ablation Therapy (CAT) program which involved the installation of a MR Brachytherapy suite, MR Linac and Gamma Knife Icon technology. His next phase of research is in the development of these CAT technologies, integrating MR in radiation therapy, and the application of MR Guided Focused Ultrasound Technology with radiation.