Radiotherapy involves using radiation (high energy X-rays) to destroy cancer cells in particular parts of the body. Very little harm is done to normal cells in the course of this treatment, which is usually done over a few weeks in short daily sessions.
Radiotherapy involves a few different steps to ensure the treatment is given to the right place every time. Initially, a CT scan or simulator takes X-Rays of the area to be treated. Sometimes a mould or mask is made to keep the affected part of the body still during treatment or general anaesthetic can be used.
Even though a child has to be alone during treatment, the radiographer and/or parents can still see and communicate with them. Radiotherapy won’t make a child radioactive and it’s safe for them to interact with others after treatment.