@georgetakei virtual colonoscopy - such a procedure exists: it's done as a CT (computer tomography) scan

https://www.macmillan.org.uk/cancer-information-and-support/diagnostic-tests/virtual-colonoscopy

You would still need to go to the hospital though.

@coyoty @georgetakei I'm in the UK so here it was free on our NHS, though depending on the urgency of your case you can have to wait. I had colorectal cancer so it was pretty quick.
I have a male friend with an prostate issue and has been referred by his GP but he's been waiting several months.

I was originally referred automatically as a result of our through the post, bi-annual, FIT test (poo sample) screening, that found blood and I then had an actual colonoscopy, which showed a cancerous tumour and was followed by a MRI scan and a CT scan to confirm and to check for any spread.

I would assume that in the USA your insurance should cover it, it's a diagnostic, but you would need to have a good reason (symptoms, tests) for your doctor to want you to have it done.