radiography
noun [ U ] uk/ˌreɪ.diˈɒɡ.rə.fi/ us/ˌreɪ.diˈɑː.ɡrə.fi/
（尤指用X射线辐射进行的）射线照相（术），放射治疗
the use of radiation (= a form of energy), especially X-rays, either to produce a picture of the inside of people or objects, or for the treatment of disease