磁共振成像在宫颈癌分期中的价值

Value of magnetic resonance imaging in the staging of the cervical cancer

目的探讨宫颈癌磁共振成像(MRI)表现,评价MRI在宫颈癌分期中的价值。方法收集本院确诊的宫颈癌66例,行常规MRI检查,并于同期进行腹膜后平扫加增强检查。结果宫颈癌的MRI表现颇具特征性,T1WI呈等信号,T2WI呈较高信号,与正常宫颈、宫旁脂肪组织形成良好对比,钆喷替酸葡甲胺(Gd-DTPA)增强后T1WI可轻度强化。MRI在宫颈癌分期总的准确率为78.8%,对浸润性癌准确率为90.9%,敏感度为84.4%,特异性为93.3%。结论 MRI在宫颈癌分期中具有重要作用,尤其在浸润性癌与非浸润性癌的判定方面具有优势,MRI分期优于临床分期。

Objective To study the MRI features of uterine cervical cancer and evaluate the value of MRI in the staging of cervical cancer.Methods Conventional magnetic resonance imaging scan was performed in 66 patients who were diagnosed as uterine cervix cancer and in the same period retroperitoneal plain and enhanced inspection were applied.Results MRI findings of cervical carcinoma were very characteristic,which appeared as isointensity on T1WI and moderate hyperintensity on T2WI,and there was a significant contrast ratio among the cervical carcinoma,normal cervix and the parametrical tissue.After Gd-DTPA enhanced T1WI might be slightly enhanced.The accuracy of all the MRI staging was 78.8%.The accuracy,sensitivity and specificity for invasive carcinoma were 90.9 %,84.4 %,and 93.3 %,respectively.Conclusion MRI plays a very useful role in identifying the stages of uterine cervical cancer,especially distinguishing invasive carcinoma from non-invasive carcinoma.The MRI staging is superior to the clinical staging.