I had a CT colonoscopy this week. Lucky me!
Last year I tried to have a conventional colonoscopy but I threw up the gloopy bowel prep solution so they couldn't carry out the procedure. This one just involved fasting the day before and drinking a small amount of radioactive fluid.
The procedure itself involves being inflated with carbon dioxide up the bum rather than a camera. It's uncomfortable and I spent the next couple of days farting incessantly

, but other than that, it was no worse than I expected.
It's a much kinder and gentler approach to a colonoscopy than having to take that horrible laxative stuff. I would recommend it if it's offered to you.
I get the results at the end of September.