You already blew way past budget, and worse, availability, than most patients can afford. And you want to minimise unnecessary radiation exposure. Those things are ordered when you have indications they will help (with diagnosis or care), not as scattershot to get diagnostic data.
Apparently there is going to be Multi-Cancer Early Detection Tests if they get FDA approval. Not accurate enough yet but probably better than nothing.
(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.)
Not for surgery, at least not yet. The robotics isn’t quite good enough
There's no such thing. How a medical professional interacts with a patient is a major part of the profession. Some people are shy, some anxious, dismissive, neurotic, ashamed, obstinate, miseducated, … etc.
You need a ton of interpersonal skills in this, particularly at diagnosis time. I might even go as far as saying it matters more than medical book knowledge. If the patient is too shy to tell you about, say, black stuff in their stool, you may never get to apply that knowledge about colon cancer.
Coincidentally, a family member of mine died of basically that. When somebody asks, we half-jokingly say he died of stubbornness. It's actually the truth, kinda.
Doctors doing diagnosis are detectives putting together clues. Ideally, they have the patient's full cooperation and zero misunderstandings. Worst case, they're being unintentionally sabotaged, bridging world views, and hampered by their own prejudices.