DWI联合MRI常规序列对早期子宫内膜癌术前评估的价值

Clinical application of DWI and conventional MRI sequences in preoperative evaluation of early stage endometrial carcinoma

目的：探讨DWI联合M RI常规序列对早期子宫内膜癌术前评估的应用价值。方法回顾性分析43例经手术病理证实的I～Ⅱ期子宫内膜癌的M RI资料，观察肿瘤信号、侵及范围，测量肿瘤实质部分的ADC值，并进行肌层浸润深度评估。结果与正常子宫内膜相比，肿瘤T1 WI多呈等信号，T2 WI呈高信号，DWI为明显高信号，ADC值降低。Ia、Ib及II期肿瘤实质部分ADC值比较，差异无统计学意义。M RI常规序列及DWI联合M RI常规序列判断肌层浸润深度的准确率分别为81．4％和86．0％。结论 DWI联合M RI常规序列对早期子宫内膜癌术前判断肌层浸润深度较准确，可作为子宫内膜癌术前评估的重要方法。

Objective To investigate the value of diffusion weighted imaging （DWI） and conventional magnetic resonance imaging （M RI） sequences in preoperative evaluation of endometrial carcinoma at early stage .Methods T he M RI data of 43 cases of pathologically confirmed I~ Ⅱ endometrial cancer were retrospectively analyzed .The signal intensity ,invasion and extent of the tumor were observed ,and ADC value was measured .Then ,we evaluated the depth of myometrial in-volvement of the tumor .Results Compared with normal endometrium ,the tumor was usually isointensity on T1WI ,hy-perintensity on T2WI and DWI ,and lower ADC values .The ADC value of the Ia ,Ib and II stage tumors showed no statis-tically different .The accuracy of conventional MRI sequences and DWI combined conventional MRI sequences was 81 .4%and 86 .0% in assessing deep myometrial invasion .Conclusion DWI combined conventional M RI sequences is accurate for assessing the depth of myometrial invasion of early endometrial cancer .And it can be used as an important method of pre-operative assessment of endometrial cancer .