Radiation therapy is an important part of cancer treatment. And with advances in technology, doctors are now able to use radiation to treat tumors more precisely than ever before. In this interview, we'll learn about new approaches in cancer care using radiation therapy. Part One: What is radiation therapy Types of cancer treated with radiation External beam radiation Planning radiation treatment (mapping) Triology Intensity Modulated Radiation Therapy (IMRT) Part Two: SirSpheres Gamma Knife Radioactive seeds Smoking and cancer Cigarette restitution fund Guest: Dr. Mohan Suntha, Vice Chairman of the Department of Radiation Oncology at the University of Maryland School of Medicine and Associate Director of the University of Maryland Greenebaum Cancer Center. Dr. Suntha is also a professor of radiation oncology at the University of Maryland School of Medicine.