传统定义TIA与DWI异常的探讨  

Exploration on traditional definition of TIA and diffusion-weighted imaging abnormalities

作　　者：李洪军[1] 秦丽晨[1] 

机构地区：[1]山东泰安中心医院神经内科,泰安271000

出　　处：《中国实用神经疾病杂志》2009年第12期4-6,共3页Chinese Journal of Practical Nervous Diseases

摘　　要：目的研究短暂性脑缺血发作(TIA)磁共振弥散加权成像(DWI)的异常改变,进一步探讨TIA传统定义与新定义在影像方面的差别。方法以2007-07～2008-09在本院住院的TIA患者为研究对象,入选患者完成MRI检查,收集检查结果及临床资料并分析DWI异常。结果共68例TIA患者入选,其中30例(44%)患者DWI异常(阳性);19例症状持续≥1h的患者中16例DWI阳性(84%);DWI阳性率随时间的延长增高。结论依据TIA传统定义24h症状持续≥1h的患者中更多发生DWI异常,具有脑实质缺血性损害,支持TIA新定义的合理性。Objective To assess the diffusion-weighted imaging（DWI） abnormalities in transient ischemic attack（TIA） patients, and further to evaluate the distinction of traditional and new defination of TIA. Methods An analysis was performed on all TIA patients who had MRI scan after symptom onset and entered to hospital from July 2007 to September 2008. The patients＇ DWI abnormalities were analyzed. Results DWI-detected abnormalities were present in 30 of 68 cases （44%） . Sixteen of the 19 patients （84%） with symptoms lasting equal to or more than 1 hour had DWI lesions. The ratio of positive DWI scans was higher with the symptom lasting. Conclusion The patients with symptom lasting equal to or more than 1 hour had the higher abnormalities on DWI and had ischemic damage in encephalon according to the traditional definition of TIA, and further support the rationality of the new definition of TIA.

关 键 词：短暂性脑缺血发作 核磁共振成像 弥散加权 

分 类 号：R743.31[医药卫生—神经病学与精神病学]