How flare inducing is CT scan of small gut?

I had one around 5 years ago and, like last time, it would probably be with a colonoscopy on the same day as a two-fer. Colonoscopies always flare up my UC (or indeterminate colitis, as it now increasingly seems to be considered) a bit, at least temporarily, but I was wondering how harsh the CT scan in terms of flaring effect- from others experiences?

Thanks, kazbern- good to know. Colonoacopy actually does not flare me- it's the oodles and oodles of biopsies that I get that do- so it alunds like that will be my biggest issue during a CT/scope "two-fer" day.