本文關(guān)鍵詞： 彌漫性軸索損傷 磁共振成像　出處：《中國臨床醫(yī)學影像雜志》2015年03期 　論文類型：期刊論文

【摘要】：目的:探討磁敏感加權(quán)成像(SWI)在CT陰性的彌漫性軸索損傷(Diffuse axonal injury,DAI)中的診斷價值。方法 :34例CT為陰性而臨床可疑為DAI的患者在外傷后3 d內(nèi)常規(guī)在3.0T磁共振行SWI和常規(guī)序列T1WI、T2WI、液體衰減翻轉(zhuǎn)恢復序列(FLAIR)掃描,比較它們對DAI的檢出率和檢出病灶數(shù)目,評價SWI在診斷中的作用。結(jié)果:SWI可清楚顯示27例DAI的顱內(nèi)異常小出血灶,檢出率達79.41%,常規(guī)T1WI、T2WI、FLAIR序列對DAI檢出率分別為20.5%、26.47%和41.17%;SWI、T1WI、T2WI、FLAIR各序列檢出微小出血量分別為261、39、61、89,SWI與T1WI、T2WI和FLAIR的差異有顯著的統(tǒng)計學意義。結(jié)論:SWI對DAI出血性病灶的檢出具有極高的敏感性,能夠檢出更多、更小病灶,且病灶顯示更加清晰,在臨床上可疑為DAI的患者應(yīng)盡早行SWI序列掃描明確診斷。
[Abstract]:Objective: to investigate the application of magnetic sensitive weighted imaging (MRI) in diffuse axonal injury (axonal injury) in CT negative patients. Methods 34 patients with negative CT and suspected DAI underwent SWI and conventional T1WI at 3.0T within 3 days after trauma. T2WI, fluid attenuated flip recovery sequence (FLAIR) scanning, to compare their detection rate of DAI and the number of lesions detected. Results 27 cases of DAI showed small intracranial hemorrhage clearly, the detectable rate was 79.41%. Routine T1WI T2WI was used to evaluate the value of SWI in diagnosis. The positive rate of FLAIR sequence on DAI was 26.47% and 41.17%, respectively. The minimal blood loss detected by flair sequence of T _ 1WI _ I ~ T _ 2WI _ I _ T _ 1W _ I was 261T _ (39) ~ 61T _ (89) WI and T _ 1WI, respectively. The difference between T2WI and FLAIR was statistically significant. Conclusion the sensitivity of FLAIR to detecting hemorrhagic lesions of DAI is very high, and it can detect more and smaller lesions. The lesions were more clearly displayed, and the patients suspected to be DAI should be diagnosed by SWI sequence scan as soon as possible.
【作者單位】： 解放軍252醫(yī)院神經(jīng)外科;
【分類號】：R651.15;R445.2

【共引文獻】

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