Four first-time astronauts took the first diagnostic X-rays ever captured on human beings in orbit.

https://spacedaily.com/sd-four-first-time-astronauts-with-only-four-hours-of-training-took-the-first-diagnostic-x-rays-ever-captured-on-human-beings-in-orbit-and-radiologists-on-the-ground-judged-the-images-clinically-usab/