MRI多序列检查在溃疡性结肠炎评估中的价值

The value of MRI in evaluating the ulcerative colitis

目的探讨联合应用MRI多序列检查在溃疡性结肠炎(ulcerative colitis,UC)病情评估中的价值。方法回顾性分析18例溃疡性结肠炎的MRI脂肪抑制T1WI、T2WI、DWI、SSFSE序列表现和内镜资料(均经病理证实),分析病变肠管的MRI图像特点,将评估结果与内镜结果进行对比分析。结果对18例共51段病变肠管进行分析,其中39段肠管为活动期,12段肠管为缓解期。39段活动期病变肠管DWI均呈高信号,其中34段肠管粘膜及粘膜下层T1WI和T2WI均为高信号,5段表现为T1WI等信号、T2WI高信号;12段缓解期病变肠管中10段DWI呈等信号,2段呈略高信号,9段粘膜及粘膜下层T1WI和T2WI均为低信号,另3段表现为T1WI等信号、T2WI略高信号,联合应用MRI多序列检查与内镜对溃疡性结肠炎活动性及病变范围的判断差异无显著统计学意义(P<0.05)。结论联合应用MRI多序列检查在评估溃疡性结肠炎活动性及病变范围的判断具有较高诊断价值。

Objective To study the feasibility of magnetic resonance imaging （MRI） in detection of ulcerative colitis （UC）. Methods Eighteen patients with ulcerative colitis confirmed by pathology were collected in the study. The MRI imagings in each segment were analyzed and were compared with endoscopic findings. Results Fifty one segments （39 in acute stage, 12 in chro- nic stage） were included in the study. AI｜ the acute stage segments were high signal on DWI, 34 segments of the mucosa and sub- mucosa T~ WI and T2 WI were high signal, 5 segments TI WI equisignal, T2 WI high signal; The DWI of 10 of chronic stage seg- ments were equisignal and other two were slightly high signal, of which 9 segments of the mucosa and submucosa TIWI and T2WI were low signa and 2 sengments showed TIWI equisignal and T2WI slightly high signal. There was no statistically significant difference in assessing ulcerative colitis and the extention between MRI and endoscopy. Conclusion MRI sequence check is val- uable in assessing ulcerative colitis and the extention in patients with inflammatory lesions.