Need help in understanding whether appendicitis can be diagnosed from an abdomen CT without contrast. Also, what are the risks of Abdomen CT with contrast for me? I have been having stomach ache along with constipated feeling since the last 3days. The stomachache escalated today and became very severe, especially in the lower right side. The general physician with whom we consulted as an emergency asked us to get a CT abdomen with contrast done soon to check for appendicitis. Please suggest as my abdomen is very bloated and I am passing a lot of gas too.