However, it is also because, in matters of life or death, as a diagnosis from a radiologist can be, we often seek a second opinion, perhaps even a third.
But we don't ask a second opinion to an "algorithm", we want a person, in front of us, telling us what is going on.
AI is and will be used in the foreseeable future as a tool by radiologists, but radiologists, at least for some more years, will keep their jobs.