磁共振多参数高分辨率成像在肛瘘诊断中的应用

Application of Multiparameter High-Resolution Magnetic Resonance Imaging in the Diagnosis of Anal Fistula

目的探讨3.0T磁共振多参数高分辨率成像在肛瘘诊断中的应用。方法回顾性分析我院2019年11月至2020年6月经手术证实且术前均行磁共振T2WI抑脂+Focus DWI+动态多期增强扫描的40例肛瘘患者资料,将磁共振诊断结果与术中结果进行比对。结果40例病例中,磁共振成像共发现内口数41个,外口数45个,瘘管为50个,脓肿数23个。经手术证实内口数46个,外口数49个,瘘管为54个,脓肿数23个。术前磁共振多参数高分辨率成像检查在肛瘘分型、内外口定位、瘘管及脓肿数结果与术中结果的对比差异显著(P>0.05),MRI检查结果与术中检查结果无明显差异。结论3.0T磁共振T_(2)WI抑脂+Focus DWI+动态多期增强多参数高分辨率成像在肛瘘术前诊断中,对病变显示清晰,可提高术前诊断正确率,在肛瘘术前手术方案制定中有较高的应用价值。

Objective To investigate the application of 3.0T high-resolution imaging with multiparameter in the diagnosis of anal fistula.Methods The data of 40 patients with anal fistula who were confirmed by surgery and underwent lipid suppression with magnetic resonance T2WI and DWI high-resolution imaging+dynamic contrast-enhanced scan preoperatively from November 2019 to June 2020 in our hospital were retrospectively reviewed,and the magnetic resonance diagnostic results were compared with the intraoperative results.Results In 40 cases,magnetic resonance imaging identified a total of 41 internal Ostia,45 external Ostia,50 fistulas,and 23 abscesses.It was confirmed by surgery that there were 46 cases of internal mouth,49 cases of external mouth,54 cases of fistula,and 23 cases of the abscess.Comparison of preoperative magnetic resonance multiparameter high-resolution imaging in anal fistula classification,internal and external mouth localization,fistula and abscess number results with intraoperative results P>0.05,no significant difference between MRI findings and intraoperative findings.Conclusion 3.0T magnetic resonance T_(2)WI fat suppression+focus DWI+dynamic multiphase enhanced multiparameter high-resolution imaging in the preoperative diagnosis of anal fistula,it shows a clear view on the lesion,can improve the preoperative diagnosis correct rate,and has a high value in the preoperative surgical plan development of anal fistula.