Radiotherapy uses high energy x-rays to kill lung cancer cells and reduce symptoms.
Your radiotherapy needs to be planned before you can begin treatment. You usually have a planning CT scan in the radiotherapy department.
Radiotherapy for advanced lung cancer can cause side effects such as tiredness and feeling sick. This type of radiotherapy won't make you radioactive.
Internal radiotherapy means giving radiotherapy to the cancer from inside the body. You might have internal radiotherapy if the cancer is blocking or partly blocking an airway.
You might have radiotherapy to the brain if your lung cancer has spread there.