Dr. Simon S. Lo is Associate Professor of Radiation Oncology at Case Western Reserve University and Director of Radiosurgery Services and Neurologic Radiation Oncology at University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center. Dr. Lo graduated from the Faculty of Medicine of The Chinese University of Hong Kong and did his residency in Clinical Oncology (Royal College of Radiologists, UK curriculum) at Queen Elizabeth Hospital, Hong Kong. He subsequently completed a residency in Radiation Oncology at University of Minnesota and also received a grant from American College of Radiation Oncology (ACRO) for a gastrointestinal radiation oncology fellowship at Mayo Clinic, Rochester, MN. He was also a visiting resident at Princess MargaretHospital, University of Toronto, Ontario, Canada. He is currently the chair of the American College of Radiology Appropriateness Criteria Expert Panel in Bone Metastasis and is an expert in brain and spinal tumors, stereotactic radiosurgery and stereotactic body radiotherapy (SBRT). He has published close to 100 peer-reviewed papers and over 35 book chapters and one comprehensive textbook in SBRT. He has given lectures and training courses on SBRT in American Society for Radiation Oncology (ASTRO), Radiological Society of America (RSNA), and American Thoracic Society (ATS) conferences and in multiple US and international academic centers. He was also a member of both the ASTRO bone and brain metastases taskforce and contributed to the ASTRO guidelines for bone and brain metastases. He is on the editorial board of multiple oncology journals and is also a reviewer for multiple journals including Lancet, Lancet Oncology, Nature Reviews Clinical Oncology, International Journal of Radiation Oncology, Biology and Physics. His areas of research are in radiobiological modeling for ablative radiotherapy, SBRT for lung, liver and spinal tumors, and toxicities associated with SBRT.