How is CT in acute abdomen?

● First asked without contrast to see the urinary tract (primarily): ureter and kidney, of if there is a mass or something like that. ● If we want to see if there is an abscess, inflammation, tumour… We ask for one with contrast, IV contrast (the contrast takes abscess form): shows us if we have appendicitis with peri appendicular inflammation for example. If there is abscess the contrast takes the form of the abscess. Also shows tumor. ● We do scan with oral contrast if we suspect stenosis (some occlusion) or suspect perforation (contrast has to be hydrosoluble if not it might cause irritation of the peritoneum and lead to peritonitis).