An endoscopy is a visual examination of the interior of a hollow body organ by use of an endoscope, often including a biopsy.

(CTE) Computed tomography enterography is an imaging procedure to evaluate diseases affecting the mucosa and bowel wall of the small intestine. CTE uses oral contrast agents to improve bowel wall visualization. Several studies established that small bowel distention using negative oral contrast agent increases diagnostic performance of some abdomen CT studies.
The multi-detector row CT (MDCT) improves temporal and spatial resolution and 3D imaging processes offer a full examination of the small bowel with surrounding structures, depicting the small bowel inflammation associated with Crohn's disease by displaying mural hyperenhancement, stratification, and thickening.
CT enterography versus capsule endoscopy provides a non invasive study with comparable sensitivity, high specificity and overall accuracy.

See also Colonoscopy and Virtual Colonoscopy.