摘要
目的探讨体外相位阵列线圈高分辨 MRI 对肛瘘检查的准确性及其价值。方法经手术证实的肛瘘患者20例,全部行体外相位阵列线圈高分辨 MRI 检查,检查序列主要包括高分辨轴面、矢状面和冠状面 T_2WI 和轴面抑脂 T_2WI 序列。结果 20例肛瘘共27个原发瘘管、24个内口,28个外口,10个肛周脓肿。高分辨 MRI 对原发瘘管、肛周脓肿、内口显示的敏感度分别为92.6%(25/27)、100.0%(10/10)和91.7%(22/24),特异度分别为92.3%(12/13)、96.3%(26/27)和85.7%(12/14)。结论体外相位阵列线圈高分辨 MRI 可较准确地判断肛瘘的分型、瘘管走行及有无脓肿形成,对正确的手术治疗非常必要。
Objective To evaluate the accuracy and clinical value of preoperative high-resolution magnetic resonance （MR） imaging with a phased-array coil for the detection of anal fistulas. Methods A total of 20 patients with surgically proved anal fistulas underwent preoperative MR imaging with phased-array coil at 1.5 T MR unit. The imaging protocol included high-resolution T2-weighted turbo spin echo sequence acquisition at axial, sagittal and coronal planes and axial T2 -weighted sequence with fat suppression. Results Twenty patients were found to have 27 fistulas, 24 internal openings,28 external openings, and 10 perianal abcesses. The sensitivity and specificity for detecting primary fistula tracks, abscesses and internal openings were92.6% （25/27） and 92.3% （12/13）, 100.0% （10/10） and 96.3% （26/27）, 91.7% （22/24） and 85.7% （12/14）, respectively. Conclusion High-resolution MR imaging is a very accurate preoperative technique for evaluating the classification of fistula-in-ano, the course of primary tracks and the presence of abscesses, thus providing important information for proper surgical treatment.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2007年第7期712-715,共4页
Chinese Journal of Radiology
关键词
磁共振成像
肛管
瘘管
Magnetic resonance imaging
Anal canal
Fistula
