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中文摘要：
目的探讨三阴型乳腺癌（TNBC）的MRI（包括动态增强DCE及扩散加权成像DWI）特征。方法收集符合要求的病例入组,比较TNBC组与Luminal组的MR形态学、动态参数及DWI的ADC值的差异。结果 44例TNBC及183例Luminal型患者,TNBC组和Luminal B型组的形态学特征及DCE参数差异均无统计学意义,而两者的ADC值差异有统计学意义,TNBC组的ADC值较高（P=0.001）。结论 TNBC存在一定的DWI特征性。相对于Luminal型来说,TNBC倾向出现较高的ADC值。
英文摘要：
Objective To explore the characteristics of triple-negative breast cancer（TNBC）on MRI（including DCE-MRI and DWI）.Methods Patients meeting the criteria were recruited into the group,and comparison of difference was made between TNBC group and Luminal group in morphologic characteristics,dynamic parameters and ADC value.Results A total of 44 cases of TNBC and 183 cases of Luminal breast cancer patients were enrolled.There were no statistal difference in morphology characteristics and DCE parameter between two groups;however,ADC value in TNBC group was higher than that of Luminal group（P=0.001）.Conclusion TNBC shows certain characteristics on breast DWI.As to Luminal type,it tends to appear a higher ADC value.
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