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 ...

Radiation therapy works by using high-energy X-rays to kill cancer cells. MSK offers precise radiation therapy that kills ...

In this lesson, students will investigate the nature of radioactivity and the effect of both distance and shielding materials on different radioactive sources using a Geiger-Muller tube with a counter ...

Doctors may use radiation therapy to treat benign tumors. Radiation can shrink and eliminate benign growths without doctors having to perform surgery. Benign tumors are noncancerous growths that can ...

Brachytherapy is a type of radiation therapy. It involves placing radioactive material inside or near a tumor to destroy cancer cells. The procedure has some benefits over other radiation techniques ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. “What is radium and why is it dangerous?” – ...