IPA: /ˈreɪdiəˌɡræfər/
KK: /reɪdiˈɒgrəfə/
A person who uses imaging techniques, such as X-rays, to help diagnose and treat medical conditions.
The radiographer took an X-ray of my arm to check for any fractures.
Radiographer → It is formed from "radio-" (from Latin *radius*, meaning ray) and "-grapher" (from Greek *grapho*, meaning to write or record). The word refers to a person who records or takes images using rays, typically in medical imaging.
Think of 'rays' ('radio-') being used to 'record' ('grapho') images, which is what a radiographer does.