Sounds like we're in agreement that you'll generally need (an AI to produce) a good shot at a diagnosis before ordering these tests then. Your original post sounded like they just get thrown into the mix at initial consultation.

(I do think the radiation concerns are a bit excessive, but there's also the problem of false positives. A lot of people have some weird "deviations" that have no impact at all, but result in goose chases if something else goes wrong and they show up.)