CT Enterography

Computed tomographic (CT) enterography combines the improved spatial and temporal resolution of multi–detector row CT with large volumes of ingested enteric contrast material to permit visualization of the small bowel wall and lumen.

 In both CT and MR enterography adequate luminal distention can usually be achieved with oral hyperhydration, thereby obviating naso-enteric intubation and making CT and MR enterography useful, well tolerated study for the evaluation of diseases affecting the mucosa and bowel wall.

 Unlike routine CT, which has been used to detect the extra-enteric complications of Crohn’s disease such as fistula and abscess, CT and MR enterography clearly depict the small bowel inflammation associated with Crohn’s disease by displaying mural hyperenhancement, stratification, and thickening; engorged vasa recta; and peri-enteric inflammatory changes. As a result, CT and MR enterography are becoming the first line techniques for the evaluation of suspected inflammatory bowel disease.