3.0T高分辨率MRI在肛瘘术前诊断中的临床价值  

The Application Value of 3.0T Highresolution MRI in Diagnosis of Anal Fistula

作　　者：张玉东[1] 彭波[1] 廖华强[1] 谢明国[1] 青明华 梁英[1] 

机构地区：[1]成都中医药大学附属医院放射科,四川成都610072

出　　处：《中国CT和MRI杂志》2017年第3期118-121,共4页Chinese Journal of CT and MRI

摘　　要：目的探讨高分辨率MRI在肛瘘术前诊断中的临床价值。方法 60例经手术证实的肛瘘患者术前均行MRI检查。回顾性分析MRI各序列显示的瘘管、内口、外口、脓肿及肛瘘分型,然后将MRI诊断结果与手术结果对照。结果 MRI显示高位肛瘘15例,其中高位复杂性肛瘘9例,高位单纯性肛瘘6例;诊断低位肛瘘45例,其中低位复杂性肛瘘25例,低位单纯性肛瘘20例。MRI诊断瘘管97个、支管18个、72个内口、70个外口及9个脓肿;与手术结果相比,MRI诊断瘘管的准确率为95.1%(97/102),检出内口的阳性率为94.7%(72/76),MRI显示外口位置、数目及肛周脓肿范围与手术结果一致。结论高分辨率3.0 T MRI术前诊断能够为临床治疗肛瘘提供较全面的解剖和病理信息,对临床选择正确的治疗方法具有重要意义。Objective To study the clinical application of 3.0T high-resolution magnetic resonance imaging （MRI）in diagnosis of anal fistula.Methods 60 patients with anal fistula underwent 3.0T MRI scan before surgery. The MR sequences were evaluated for demonstration of anal fistula～ internal openings, external opening, abscess and types of anal fistula.The MRI findings were compared with surgical results. Results On MRI examinations, The high position anal fistula was fbund in 15 patients, 9 patients had complex anal fistula, 6patients had simple fistula. The low position anal fistula was found in 45 patients, 25 patients had complex anal fistula, 20 patients had sinlple fistula. And 97 fistulas, 18 branch of fistula, 72 internal openings, 70 external openings, and 9 perianal abscesses were detected by MRI. The diagnostic accuracy of MRI for fistula was 95.1% （97/102）, the positive rate for internal fistula was 94.7% （72/76）, The site, number and perianal abscess of external fistula showed with MRI was the same with operation. Conclusion High-resolution 3.0T MRI may provide more comprehensive anatommic and pathology information for clinical treatment ofanla fistula, has great significance to the clinical treatment.

关 键 词：磁共振成像 高分辨力 肛瘘 

分 类 号：R445.2[医药卫生—影像医学与核医学] R574.8[医药卫生—诊断学]