I don't know of any country in the world that doesn't at least have a concept of copyright, and the vast majority of them have signed international treaties. Maybe Eritrea, Iran, Iraq, Somalia are exceptions? But those aren't in Europe.
How would you know? Whether or not something is protected by copyright is not something you can asses with a blanket statement. Medical images can definitely be protected by copyright.
Can there exist medical images protected by copyright? Definitely I'm you can even find an image made by a photocopier that can be protected by copyright, but that doesn't mean photocopies are usually so.
You're gonna have a hard time convincing a court that your dental radio was in fact creative art.