高场磁共振在肛瘘诊断中的临床应用

摘要

目的 探讨1.5T高场磁共振成像(MRI)在肛瘘诊断中的应用价值.方法 31例临床诊断为肛瘘的患者,术前应用磁共振体部相控阵线圈进行轴位、矢状位、冠状位的多种序列检查.结果 MRI成像均符合临床诊断,其中经括约肌肛瘘9例,括约肌间肛瘘16例,括约肌外肛瘘1例,括约肌上肛瘘5例;单纯性肛瘘11例,复杂性肛瘘20例;能够正确显示内口位置27例.结论 应用高场MRI能准确定位肛瘘的内口、瘘管的走向及其与肛管直肠括约肌之间的关系,具有重要的临床实用和推广价值.%Objective To explore the application value of 1 .5T magnetie resonance imaging in diagnosis of anal fistula. Methods 31 cases oi anal fistula were examined by MRI in phased array roil using multiple sequences such as axial, sagittal and coronal sections. Results The imaging of MRI all accorded with the clinical diagnosis,including 9 cases of anal fistula, through sphincter, 16 cases of inter sphincter anal fistula, 1 case oi outter sphincter anal fistula, and 5 cases of above sphincter anal fistula; there were 1 1 cases diagnosed as simple anal fistula,20 cases as complex anal fistula. 27 cases could be located the internal opening by MRI. Conclusion High-field MRI can locate the internal opening of anal fistula,form oi anal fistula,and the relation of anal fistula with sphincter, which has important clinical utility and promotional value.