CT enterography is a powerful tool in the evaluation of small bowel disease. Adequate luminal distention can usually be achieved with oral ingestion of a large volume of neutral enteric contrast material in the evaluation of diseases affecting the mucosa and bowel wall, thereby obviating nasogastric intubation and making CT enterography a useful, well tolerated study in this setting. CT enterography clearly depicts the small bowel inflammation associated with Crohn's disease by displaying the mural enhancement, stratification and thickening, engorged vasa recta, and perienteric inflammatory changes. (Scott et al, 2006).Negative oral contrast agents are becoming more important than previously in MSCT. Optimal evaluation of the vascularity on maximum-intensity – projections and multiplanar reconstruction images could not be achieved with the administration of a positive oral contrast agent. This is important for the diagnosis of vascular bowel diseases such as mesenteric thrombosis, small bowel infarct, atherosclerotic process, or gastro-intestinal bleeding. Abdominal visceral imaging with MSCT uses both the vascular and parenchymal phases of contrast material enhancement to provide a combined angiographic and organ- directed study (Horton et al, 2003).CT enterography is becoming the first-line modality for the evaluation of suspected inflammatory bowel disease and an important alternative to traditional fluoroscopy in the assessment of other small bowel disorders such as bowel ischemia and small bowel neoplasms. The ability to visualize the bowel wall and to distend the lumen adds to the diagnostic capabilities of current abdominal CT examinations. The use of neutral luminal oral contrast agents combined with the volume capabilities of MSCT scanners allows radiologists to routinely visualize the bowel and its vascular supply. (Hara et al, 2004)