It's smart of you to think of a timeline beyond what you see everyday while in training. It seems like so many of us only focus on the next step or two, which--in this context--means overly weighting the lives and careers of the residents and academic attendings when picking a specialty.
I wasn't around forty years ago, but many of my residency attendings trained in the 1980s and early 1990s, so I got glimpses into what radiology was like back then. MRI was still a novel technology and not super available. CT scanners were single-slice and shut down for the day circa 4 pm. Residents would have to stay late to hang the next day's films. PACS and voice-recognition software was virtually unheard of, and turnaround times were measured in days rather than minutes.
It's hard for me to imagine any medical student in 1983 could have envisioned what radiology would look like in 2023 with any degree of accuracy. I don't know how any of us could even dare to guess what it will look like in 2063.
I'm skeptical about the claims that human radiologists won't exist in x, y, or z number of years. I also don't know enough about it to be sure that AI won't have a significant impact on our field, but that's not the point. The point is that no one should choose radiology, or any specialty really, thinking that it's static. Accept the fact that you'll be practicing differently in 5 years than you are today, never mind 40. Embrace the suc...I mean, change.