MRI多序列成像对肛瘘手术的指导价值研究

目的:探讨MRI多序列成像对肛瘘手术的参考价值。方法:回顾性分析95例经手术证实的肛瘘病例,与MRI诊断结果相比较,分析MRI多序列成像对肛瘘诊断的敏感度及阳性预测值。结果:MRI诊断原发瘘管的敏感度为97.87%,阳性预测率为98.92%;诊断分支瘘管的敏感度为96.67%,阳性预测率为93.55%;诊断内口的敏感度为96.67%,阳性预测率为98.86%;诊断外口的敏感度为98.85%,阳性预测率为100%;诊断肛周脓肿的敏感度为97.56%,阳性预测率为100%。MRI多序列检查对肛瘘的诊断有极高的敏感度及阳性率。结论:MRI检查是目前肛瘘的首选检查方法。肛瘘的MRI多序列、多平面的检查,增强扫描也是必要的,MRI可以准确地评估是否有脓肿的形成,更加有效地指导手术方案的制定,提高诊治效果,避免肛瘘的复发。

Study on the guidance value of multisequence MRI in anal fistula surgery

Objective To explore the reference value of MRI multi-sequence imaging for anal fistula surgery.Methods A retrospective analysis was performed on 95 cases of anal fistula confirmed by surgery,and the sensitivity and positive predictive value of MRI multi-sequence imaging in the diagnosis of anal fistula were compared with the MRI diagnosis results.Results The sensitivity of MRI in diagnosing primary fistulas is 97.87%,and the positive predictive rate is 98.92%.The sensitivity of diagnosing branch fistulas is 96.67%,and the positive predictive rate is 93.55%.The sensitivity of the internal diagnosis is 96.67%,and the positive predictive rate 98.86%;the sensitivity of diagnosing the external mouth was 98.85%,and the positive predictive rate was 100%;the sensitivity of diagnosing perianal abscess was 97.56%,and the positive predictive rate was 100%.Multi-sequence MRI has a very high sensitivity and positive rate for the diagnosis of anal fistula.Conclusion MRI is currently the method of choice for anal fistula.Multi-sequence and multi-planar MRI of anal fistula,and enhanced scanning are also necessary.MRI can accurately assess the formation of abscesses,more effectively guide the formulation of surgical plans,improve the diagnosis and treatment effect,and avoid recurrence of anal fistula.