I agree with you, but here is where things get tricky:
Everyday I see something on a scan yhat I've never seen before. And, possibly, no one has ever seen before. There is tremendous variation in human anatomy and pathology.
So what do I do? I use general intelligence. I talk to the patient. I talk to the referring doctor. I compare with other studies, across modalities and time.
I reason. I synthesize. I think.
So my point is, basically, radiology takes AGI.