What are the sources of energy for external radiation therapy?

External radiation therapy is used to kill or combat against cancer cells. The source of this energy is from a linear accelerator, a machine which is the source of the radiation. This linear accelerator produces high energy x-ray beams which can even penetrate within tissues to destroy the cancer in the tumor area. This treatment is done regularly.

They might be white heads, basically pimples but you should ask your parents to check them out before it’s something bad.