Radiation therapy, or radiotherapy, is a type of cancer treatment in which specialists kill cancerous cells in the body by exposing them to ionizing radiation, such as X-rays, gamma rays, high-energy ...

Radioactive sources contain radioactive material of a particular radionuclide (an unstable form of an element emitting radiation), which can vary based on the application for which the source was ...

Prolonged exposure to low-dose ionizing radiation is associated with a higher risk of death from cancer than previously thought, suggests research tracking the deaths of workers in the nuclear ...