How often is that a problem?
They want scans/tests from trusted source to make decisions about person health/life. The only thing they can trust is whatever they have close and used for years.
If there is no time to get a new scan/test I think there is no time to download stuff or wait for someone to email things.
I brought my CT scans on disc to my ortho who didn't have a CT machine in the last 300 days.
They will do new one right there and if there is no time - there is no time to mail stuff around.
What kind of nerd fantasy is it?
I went once with x-ray on cd that was weeks old for procedure - doctor there went “yeah cool, I don’t care, it is my risk we do new one by personel I know on equipment I know”.