磁共振成像高分辨率抑脂T_2加权成像及三维重建在肛瘘诊断中的价值  

The value of high-resolution and fat-suppressed T_2WI and MIP in the diagnosis of perianal fistulas

作　　者：朱杏莉[1] 张伯英[1] 郭建平 郭茂林[1] Zhu Xingli Zhang Boying Guo Jianping Guo Maolin.(Department of Radiology, The 150 th Hospital of PLA, Luoyang 471031, China)

机构地区：[1]中国人民解放军第150中心医院放射科MRI室,洛阳471031

出　　处：《实用医学影像杂志》2017年第5期369-370,共2页Journal of Practical Medical Imaging

基　　金：国家自然科学基金面上项目(81271537)

摘　　要：目的探讨磁共振成像(MRI)高分辨率抑脂T_2加权成像(T_2WI)及三维重建在肛瘘诊断中的价值。方法 10例肛瘘患者行MRI高分辨率抑脂T_2WI扫描,并行最大密度投影(MIP)重建,分析MRI表现,评价瘘管与内外括约肌的关系及复杂性肛瘘的分型,比较内、外口的显示率,将诊断结果与手术进行对照。结果瘘管于T_1WI表现为条状略低信号,T_2WI抑脂序列呈明显高信号,以三维重建像显示病灶整体形态最佳,与手术相比,MR诊断内口、外口及分型的符合率分别为92%(11/12)、85%(11/13)、90%(9/10)。结论 MRI高分辨率抑脂T_2WI及三维重建是肛瘘的一种重要诊断方法,具有重要的临床价值。Objective To study the value of high-resolution, fat-suppressed T2WI and MIP in the diagnosis of perianal fistulas. Methods Ten patients suspected of perianal fistulas were accepted MR scanning of pelvic without contrast. The imaging of the periaqal fistulas was analyzed. The relations among the fistula and internal and external anal sphincter, the types and the display of the internal and external openings were assessed, and the diagnosis with the operation results was compared. Results The performance of fistula was low signal on TIWI, and high signal on T2WI fat suppression sequence, the best display on lesions was in 3D reconstruction. Compared with the operation results, the correct rate of MRI diagnosis was 92% （internal openings）, 85%（external openings）, 90%（types）, respectively. Conclusion MRI is an important diagnostic method for perianal fistula, and has great value.

关 键 词：磁共振成像 肠瘘 诊断 

分 类 号：R445.2[医药卫生—影像医学与核医学] R657.16[医药卫生—诊断学]