It’s disgusting how little freedom there is in this area. Even if a doctor wanted to do this for you, they would face criticism from their peers. It’s a form of doublespeak when the messaging is “early detection is key” but you can’t actually use the best tools available until you are sick. The response that people could over react on marginal cases and do more harm if they scan early is incidental- if they scanned more healthy people they would learn how to deal with marginal cases better. I think your only hope is randomly becoming friends with a doctor who self experiments and thinks you are trust worthy enough to let in on it. I don’t even know how possible that is because the drugs administered are probably well controlled, and the machines might be logging information which makes it hard to do privately. Perhaps this is a good candidate for a medical tourist resort start up.