小肠缺血与肠系膜上动脉狭窄的相关性研究

目的探讨小肠缺血与肠系膜上动脉（Superior mesenteric artery SMA）狭窄的相关性。方法对28例CT表现为肠系膜上动脉狭窄或闭塞的患者进行回顾性分析，CT检查结果采用多种后处理技术进行肠系膜上动脉成像，分析肠系膜上动脉的狭窄情况及小肠缺血的程度。结果28例肠系膜上动脉狭窄患者中，16例临床确诊为小肠缺血，CT主要表现为肠壁增厚，分层强化，肠管扩张、积气、积漶，肠壁强化程度减低或无强化。CTA表现为管腔内充盈缺损或突然中断及肠系膜上动脉硬化斑块形成。结论多层螺旋CT及CT血管成像是诊断小肠缺血的一种无创性有价值的检查方法。

The Research on the Correlation between the Severity of Intestinal Ischemia and the Stricture of Superior Mesenteric Artery

Objective To investigate the association of intestinal ischemia and stricture of Superior mesenteric artery(SMA).Methods A retrospective analysis of 28 patients with stricture or occlusion in Superior mesenteric artery,CTA was processed with maximum intensity projection (MIP),volume rendering (VR) and vessel probe(VP) to observe the mesenteric artery.Recults Of the 28 patients with stricture of Superior mesenteric artery,16 patients were performed of intestinal ischemia.The MSCT appearances were included bowel-wall thickening,luminal dilatation,the declined contrast-enhanced degrees of bowel walls or non contrast-enhancement of bowel walls.CTA appearanced the filling defect or occlusion,or the atherosclerotic plaque in the Superior mesenteric artery.Conclusion Multidetector-row CT and CTA can make the diagnosis of acute or chronic intestinal conditions.It plays an important role.