急性脑梗死磁共振液体翻转恢复与T2WI加权像对比分析

目的:探讨急性脑梗死在磁共振液体衰减翻转回复(fluid attenuation inversion_recovery,FLAIR)序列与常规SE序列T2WI加权像上的表现,并对比分析双序列在急性脑梗死MR诊断的敏感性。方法:分析初发50例急性脑梗死病人在磁共振FLAIR序列与T2WI加权像中的影像表现,并进行相关比较分析。结果:在50例急性脑梗死中FLAIR序列显示病灶46枚,T2WI加权像显示病灶29枚,有17个梗死病灶仅在FLAIR序列中显示,20个病灶的信号强度、范围及边界在FLAIR序列较T2WI加权像显示清楚。结论:FLAIR序列能够抑制脑脊液的信号,显示病灶较T2WI加权像信号高,特别是临近脑室、脑沟及脑池的脑梗死病灶,在诊断急性脑梗死中较T2WI加权像敏感,可作为常规颅脑检查的补充序列。

Use of magnetic resonance with FLAIR pulse sequence and the T2-weighting image in acute cerebreal infraction

Objective: To discuss the performance of magnetic resonance with FLAIR pulse sequence and the T2WI weighting image in the patients with acute cerebral infarction,and analyze the sensitivity of MRI with double sequence in the acute cerebral infarction.Methods: The study analysed a total of 50 cases with acute cerebral infarction by the magnetic resonance with FLAIR sequence and the T2WI weighting image,and correlatively comparased.Results: Our results revealed that there 46 focus of disease were detected in FLAIR sequence,29 focus of disease were detected in T2WI weighting image,but 17 focus of disease only to be demonstrate in the FLAIR sequence,20 focus of diseases signal 'strength,the scope and the boundary compare the T2WI weighting image to be clear in the FLAIR sequence.Conclusion: It is concluded that the FLAIR sequence can suppress the signal of cerebrospinal fluid,demonstrated focus of disease compares the T2WI weighting to like the signal to be high,specially focus of cerebral infarction approaches brain ventricle,the brain ditch and the brain pond,so that in the diagnosis of acute cerebral infarction FLAIR sequence compares the T2WI weighting image to be sensitive,and may take the supplement sequence of acute cerebral infarction inspection.