What is radiation and how does it work?

Radiotherapy is called radiotherapy, mainly through X-ray and other electron rays directly kill tumors to achieve the purpose of curing tumors. The process of radiotherapy is: first, determine the patient's radiotherapy position; second, after CT simulation positioning, delineate the patient's tumor target area and formulate radiotherapy plan; third, comprehensively evaluate the feasibility, efficacy and safety of radiotherapy plan; fourth, let the radiotherapy patient reset, and determine the feasibility of radiotherapy again.