Radiation oncologists are medical doctors who specialize in treating cancer using radiation therapy. They use high-energy particles or waves, such as x-rays, gamma rays, electron beams, or proton beams to target and destroy cancer cells while minimizing damage to healthy tissue. Radiation oncologists work closely with other members of the cancer care team, including surgeons, medical oncologists, and radiologists, to develop a comprehensive treatment plan for each patient. They may also conduct research to improve radiation therapy techniques and outcomes for patients.