弥散加权成像对超急性脑梗塞的诊断价值探讨  

The Diagnostic Value of Diffusion-Weighted Imaging in Super Acute Brain Infarction

作　　者：龚良庚[1] 肖新兰[1] 邢萍萍[1] 袁爱梅[1] 连珞[1] 尹建华[1] 

机构地区：[1]江西医学院第二附属医院MRI室,江西南昌330006

出　　处：《实用临床医学（江西）》2004年第6期110-111,114,共3页Practical Clinical Medicine

摘　　要：目的探讨弥散加权成像(Diffusionweightedimaging,DWI)对超急性脑梗塞的诊断价值。方法19例超急性脑梗塞患者均行液体衰减反转恢复序列的T1像(T1FLAIR)、T2像(T2FLAIR)、T2加权像(T2WI)、及弥散加权像(DWI)检查。比较各种检查方法对病灶的检出率。结果①DWI对病灶的检出率和敏感性均明显高于T1FLAIR、T2WI、T2FLAIR(P均<0.05);②所有病灶的DWI表观弥散系数(apparentdiffusioncoefficient,ADC)值均有不同程度下降,平均下降64.3%(35%～87%)。结论DWI对超急性脑梗塞的诊断敏感性高,能准确、可靠地判断病灶的大小及部位,对诊断超急性脑梗塞有重要价值。Objective:To study the diagnostic value of diffusion-weighted imaging(DWI)in super acute stage brain infarction.Methods:Nineteen cases of super acute stage brain infarction were examined by MRI.The sequences included T_1FLAIR (T_1 fluid-attenuated inversion recovery),T_2WI(T_2 weighted imaging),T_2FLAIR and DWI(diffusion-weighted imaging).The rates of lesions displayed were compared between every sequence.Results:①The sensitivity and display rate on DWI was higher than T_1FLAIR,T_2FLAIR and T_2WI.②The value of ADC of the lesions decreased in all cases.The average was 64.3% (from 35% to 87%).Conclusion:DWI is more sensitive than other sequences;the size and position of lesions can be delayed on DWI accurately and reliably.There is important value of DWI in diagnosis of super acute brain infarction.

关 键 词：脑梗塞 急性 弥散加权成像 诊断 

分 类 号：R743.33[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]