Paulsen Scott R, Huprich James E, Fletcher Joel G, Booya Fargol, Young Brett M, Fidler Jeff L, Johnson C Daniel, Barlow John M, Earnest Franklin
Department of Diagnostic Radiology and the College of Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
Radiographics. 2006 May-Jun;26(3):641-57; discussion 657-62. doi: 10.1148/rg.263055162.
Computed tomographic (CT) enterography combines the improved spatial and temporal resolution of multi-detector row CT with large volumes of ingested neutral enteric contrast material to permit visualization of the small bowel wall and lumen. Adequate luminal distention can usually be achieved with oral hyperhydration, thereby obviating nasoenteric intubation and making CT enterography a 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 extraenteric complications of Crohn disease such as fistula and abscess, CT enterography clearly depicts the small bowel inflammation associated with Crohn disease by displaying mural hyperenhancement, stratification, and thickening; engorged vasa recta; and perienteric inflammatory changes. As a result, CT enterography is becoming the first-line modality for the evaluation of suspected inflammatory bowel disease. CT enterography has also become an important alternative to traditional fluoroscopy in the assessment of other small bowel disorders such as celiac sprue and small bowel neoplasms.
计算机断层扫描（CT）小肠造影将多排探测器CT改善的空间和时间分辨率与大量口服中性肠道对比剂相结合，以显示小肠壁和肠腔。通常通过口服补液可实现足够的肠腔扩张，从而避免鼻肠插管，并使CT小肠造影成为评估影响黏膜和肠壁疾病的一种有用且耐受性良好的检查方法。与用于检测克罗恩病肠外并发症（如瘘管和脓肿）的常规CT不同，CT小肠造影通过显示肠壁强化、分层和增厚、直小血管充血以及肠周炎症改变，清晰地描绘出与克罗恩病相关的小肠炎症。因此，CT小肠造影正成为评估疑似炎症性肠病的一线检查方法。在评估其他小肠疾病（如乳糜泻和小肠肿瘤）时，CT小肠造影也已成为传统荧光透视检查的重要替代方法。
