扩散加权成像对颅内肿瘤术后脑梗死诊断的价值  

Diffusion weighted MRI:diagnostic value in patients with cerebral infarction following operation of intracranial tumor

作　　者：廖伟华[1] 唐北沙[2] 王小宜[1] 姜新雅[1] 陈长青[1] 黄军[3] 

机构地区：[1]中南大学湘雅医院放射科,湖南长沙410008 [2]中南大学湘雅医院神经内科,湖南长沙410008 [3]中南大学湘雅医院神经外科,湖南长沙410008

出　　处：《中风与神经疾病杂志》2008年第2期152-154,共3页Journal of Apoplexy and Nervous Diseases

基　　金：国家自然科学基金子课题资助(No.30370433)

摘　　要：目的评价磁共振扩散加权成像(DWI)对脑肿瘤术后早期并发脑梗死诊断的应用价值。方法373例脑肿瘤患者术后72h内均行常规MRI和DWI检查,应用受试者操作特性(ROC)分析方法评价DWI与T2WI对术后早期并发脑梗死的诊断价值。结果22例患者最后确诊为术后脑梗死,DWI、T2WI两种方法诊断术后早期合并脑梗死的ROC曲线下面积(Az)分别为0.951±0.032、0.868±0.050,二者差别有统计学意义(P=0.040)。DWI可清楚地区分瘤周水肿区与脑梗死灶区。结论DWI对脑肿瘤术后早期并发脑梗死的诊断优于常规T2WI,可成为脑肿瘤术后常规检查方法。Objective To study the diagnostic value of diffusion weighed imaging（DWI） in patients with cerebral infarction following operation of intracranial tumor. Methods 373 patients with intracranial tumor were underwent conventional MRI and DWI 72 hours after operation. The diagnostic value of DWI and T2WI in patients with postoperative cerebral infarction were compared through ROC analysis. Results 22 patients with cerebral infarction received final diagnosis. ROC analysis indicated that there were significant difference （P = 0. 040 ） between Az on DWI （Az = 0. 951 ± 0. 032 ） and on T2 WI （Az = 0. 868± 0. 050）. DWI can discriminate peritumor edema from cerebral infarction. Conclusion DWI was superior to T2 WI obviously on diagnosing cerebral infarction following operation of intracranial tumor, and it was believed to become conventional sequence in postoperative patients with intracranial tumor.

关 键 词：磁共振扩散加权成像 脑梗死 颅内肿瘤 手术 

分 类 号：R739.4[医药卫生—肿瘤]