MRI动态增强扫描对肛瘘的诊断价值

摘要

Objective:To evaluate the value of dynamic contrast-enhanced MRI combined with routine MRI scanning for the diagnosis of anal fistula. Methods:A total of 51 cases were confirmed by postoperative anal fistula underwent routine MRI scanning and dynamic contrast enhanced MRI(DCE-MRI) examination,and the display rates of anal inner and outer fistula,dy-namic enhancement curve were compared. Results:Compared with the operative findings,contrast enhanced MRI represented 70 fistulae (96.2%),51 internal openings (98.3%) and outside mouth 52 (100%) as well as 9 sites of abscess (100%),79.3% of the fistula peak enhancement for 165 seconds. Conclusion:Dynamic contrast enhanced magnetic resonance imaging can improve the detection rate of anal fistula. It is a feasible method for evaluating perianal fistula activity.%目的:评价MRI动态增强扫描联合常规MRI扫描对肛瘘的诊断价值. 方法:51例肛瘘患者行常规MRI扫描及动态增强扫描,比较肛瘘内、外瘘口的显示率及瘘管动态强化曲线. 结果:MRI动态增强扫描共显示瘘管70个、内口51个、外口52个、脓肿9个;与手术所见比较,显示肛瘘内口、瘘管数量、肛瘘外口和脓肿准确率分别为96.2%、98.3%100.0%和100.0%,79.3%的瘘管强化峰值为165 s.结论:MRI动态增强扫描能提高肛瘘合并肛周脓肿的检出率,并对瘘管炎症活动性的判定有应用价值.