Is it possible to have a CT scan of abdomen/pelvis that does not require me to ingest barium? My doc says I can but radiology dept. Says I can't.

Ct. This is an issue that has been debated for past 10 years. If you are concerned for kidney stone noncontrast study of choice. I know there is literature advocating no contrast, but I find most radiologist prefer contrast. It does help to define structures.