MR扩散加权成像与ADC值在脑膜瘤分级中的诊断意义  

Diagnostic Significance of MR Diffusion Weighted Imaging and ADC Value in Classification of Meningiomas

作　　者：国云波 赵鹏[2] GUO Yun-bo;ZHAO Peng(Department Of MR room,Liaoyang Central Hospital,Liaoyang 111000,Liaoning Province,China;Department Of Nuclear medicine discipline,Liaoning Cancer Hospital,Shenyang 110000,Liaoning Province,China)

机构地区：[1]辽阳市中心医院磁共振室,辽宁辽阳111000 [2]辽宁省肿瘤医院核医学科,辽宁沈阳110000

出　　处：《中国CT和MRI杂志》2022年第12期29-30,33,共3页Chinese Journal of CT and MRI

基　　金：辽宁省自然科学基金(20170550572)。

摘　　要：目的分析MR扩散加权成像(DWI)与定量表观扩散系数(ADC)值在脑膜瘤分级中的诊断意义。方法回顾性分析,收集本院2015年3月至2019年12月收治脑膜瘤患者76例,对患者所得MRI图进行分析,计算不同级别膜瘤NADC、ADCmin、ADCmean以及与健侧白质ADC值差异以及不同亚型脑膜瘤NADC、ADCmin、ADCmean值,并分析不同亚型脑瘤水肿情况。结果按照脑膜瘤2007年WHO分类方法分为:Ⅰ级脑膜瘤患者67例(88.15%),Ⅱ-Ⅲ级脑膜瘤患者9例(11.84%),不同级别膜瘤NADC、ADCmin、ADCmean以及与健侧白质ADC值比较差异无统计学意义(P>0.05),但Ⅰ级病灶ADCmean明显高于健侧ADC值(P<0.05),Ⅱ-Ⅲ级脑膜瘤ADCmean与健侧ADC值无差异(P>0.05);不同亚型脑膜瘤中ADCmean值最高为血管瘤样,纤维型最低;血瘤样型水肿最为严重,其次为分泌型脑膜瘤。结论MR扩散加权成像与ADC值可为脑膜瘤诊断提供参考,ADC值可提示出I级脑膜瘤的微观结构,但在不同级别脑膜瘤鉴定中临床价值有限。Objective To analyze the diagnostic significance of MR diffusion weighted imaging(DWI)and quantitative apparent diffusion coefficient(ADC)values in classification of meningiomas.Method 76 patients with meningioma were collected and analyzed retrospectively in our hospital from March 2015 to December 2019.The MRI images of the patients were analyzed.The NADC,ADCmin,ADCmean of meningiomas of different grades and the difference in ADC values between the healthy white matter and the NADC,ADCmin,ADCmean of meningiomas of different subtypes were calculated.The edema of brain tumors of different subtypes was analyzed.Results According to the 2007 WHO classification of meningiomas,they were divided into 67 cases with meningiomas of gradeⅠ(88.15%),9 cases with meningiomas of gradeⅡ-Ⅲ(11.84%).There were no significant differences in NADC,ADCmin,ADCmean,and ADC values of healthy white matter between different grades of meningioma(P>0.05),but ADCmean in gradeⅠlesions was significantly higher than that in healthy side(P<0.05).There was no difference in ADCmean of gradeⅡ-Ⅲmeningioma and ADC of the healthy side(P>0.05).Among different subtypes of meningiomas,the ADCmean value was the highest in angiomatoid type and in the fibrous type was the lowest.The edema of angiomatoid type was the most severe,whose highest edema index was 33.64,and followed by secretory meningioma.Conclusion MR diffusion weighted imaging and ADC values can provide a reference for the diagnosis of meningiomas.ADC values can indicate the microstructure of grade I meningiomas,but they have limited clinical value in the identification of meningiomas of different grade.

关 键 词：MR 扩散加权成像 ADC值 脑膜瘤 分级 

分 类 号：R445.2[医药卫生—影像医学与核医学]