SWI对脑创伤性轴索损伤的诊断价值  

Diagnosis Significance of SWI to Traumatic Axonal Injury in Brain

作　　者：李海林[1] 杨桑杰草 周俊林[1] 张祎年[1] 张莉[1] 钱伟伟[1] 孙西浚[1] 

机构地区：[1]甘肃省兰州市第二人民医院放射科,甘肃兰州730000

出　　处：《西北民族大学学报（自然科学版）》2015年第1期64-67,共4页Journal of Northwest Minzu University(Natural Science)

摘　　要：目的:探讨磁敏感加权成像(SWI)对弥漫性轴索损伤(DAI)的诊断价值.方法:对40例临床诊断为DAI病例常规T1WI,T2WI液体衰减反转恢复(FLAIR)序列和磁共振弥散加权(DWI)及磁敏感加权(SWI)扫描.结果:SWI可清楚显示31例DAI的颅内异常小出血灶,为点状、条索状、类圆形或串珠状的低信号影,检出率77.5%,分别同常规T1WI,T2WI序列检出率15%,32.5%(χ2=31.43,P=0.01,χ2=16.36,P=0.01),同FLAIR序列检出率50%,DWI序列57.5%(χ2=6.54,P<0.05,χ2=3.65,P<0.05).结论:SWI能非常敏感地检出外伤后弥漫性轴索损伤患者的脑内小出血灶,对弥漫性轴索损伤有很高的诊断价值.Objective： To study the clinical significance of the susceptibility weighted imaging （SWI） sequence in the diagnosis of the diffuse axonal injury. Methods：40 patients affected with the diffuse axonal injury underwent T2W1,FIAIR,DWI and SWI sequence simultaneously. The different kinds of images were compared and analyzed. Results：SWI in 31 cases （77.50/6o） showed clearly small abnormal iintracerebral hemorrhage as low signal of spots, rounds or circles Or bead-like. Intracerebral hemor- rhage could also be shown in 6 cases （15%） with T1W1 sequence,in 13 cases（32.5%）with T2WI se- quence. In 20 cases （50%） with FLAIR sequence and in 23 cases （57.5%） with DWI sequence. Con- clusion： SWI sequences have higher sensibility than other sequences in the diffuse axanal injury diag- nosis,and have high diagnostic value in diffuse axonal injury.

关 键 词：磁共振成像 磁敏感加杈成像 弥漫性轴索损伤 弥散加权成像 

分 类 号：R741[医药卫生—神经病学与精神病学]