High-energy x-rays are utilised in radiation therapy to kill cancer cells. Radiation oncologists are medical professionals focused on administering radiation therapy. Numerous forms of cancer can be treated with radiation treatment. This article gives a comprehensive review of radiation treatment, the various types of radiation therapy, and the reasons why it is used to treat cancer. What is radiation therapy? Radiation therapy is a type of cancer therapy that uses high-intensity radiation beams to destroy and shrink the tumour cells, This works by damaging the genetic material of the tumour cells called the DNA. If