子宫内膜癌不同b值弥散加权成像的初步研究  

Different b value in diffusion weighted imaging of endometrial cancers

作　　者：公维云[1] 王君霞[1] 谢元忠[1] 苏慧[1] 盛蕾[1] 

机构地区：[1]泰安市中心医院医学影像部,山东省271000

出　　处：《中华临床医师杂志（电子版）》2014年第18期28-30,共3页Chinese Journal of Clinicians(Electronic Edition)

摘　　要：目的探讨不同b值对子宫内膜癌弥散加权成像信号强度的影响。方法采用不同b值条件(b值分别取50、400、800 s/mm2)对46例子宫内膜癌患者在3.0 T MRI上进行弥散加权成像,选择病变感兴趣区及正常子宫肌层部位分别进行信号强度的测定并计算信号强度比(SIR),进行统计学分析。结果所有子宫内膜癌病例于b=50 s/mm2弥散像均为稍高或明显高信号,且随着b值的增加时(400、800 s/mm2)病变与正常子宫肌层SIR值均较b=50 s/mm2时增大,差异具有统计学意义(P<0.05)。结论不同b值对子宫内膜癌弥散加权成像信号强度有影响,且随着b值的增加,病变与正常子宫肌层的SIR增大。Objective To study the effect of different b values on signal intensity and apparent diffusion coefficient of diffusion-weighted imaging of endometrial cancers. Methods Diffusion weighted imaging were performed on 46 endometrial cancers at b values of 50, 400, 800 s/mm2 on 3.0 T MR scanner. The signal intensity of lesions and normal myometrium were measured, and the signal intensity ratio （SIR） was calculated. Results All cases of endometrial cancers appeared as slightly or obviously high signal at b value of 50 s/mm2, and the measured signal and SIR significantly increased with b value, of 400, or 800 s/mm2 when compared to b value of 50 s/mm2 （P〈0.05）. Conclusion The b value may have great influence on DWI of endometrial cancer, and the measured signal and SIR can significantly increase with the increasing b value.

关 键 词：子宫内膜肿瘤 磁共振成像 弥散 B值 信号强度比值 

分 类 号：R737.33[医药卫生—肿瘤] R445.2[医药卫生—临床医学]