磁共振FSE及FastFLAIR序列对脑内小缺血病灶的诊断价值

DIADYNAMIC VALUE OF MR FSE AND FAST FLAIR SEQUENCE IN DIAGNOSING CEREBRAL ISCHEMIA

目的:探讨FSE序列及快速FLAIR序列对脑内小缺血病灶的诊断价值。方法:随机抽取同时行FSE和 FLAIR序列检查的腔隙性脑缺血病变60例,由两名有经验的MR医师采用双盲法分别对FSE及FastFLAIR序列图像进行分析,并对疾病作出分级诊断。结果:病变于FSE序列呈略高信号,边界欠清,于FLAIR序列表现为较高信号,边界较清楚:部分在FSE序列表现为可疑病灶或未能显示的病灶,在FLAIR序列能较清楚显示。经过统计学分析,可以认为控制医生这一分层因素影响后,应用FLAIR序列诊断脑梗塞的效能高于应用FSE序列进行诊断。结论:FastFLAIR序列在显示脑内缺血性病灶方面较FSE序列有更高的敏感性,应作为颅脑MRI检查的常规序列。

Objective： To evaluate fast spin echo （FSE） and fast fluid - attenuated inversion recovery （FLAIR） sequence MR imaging in diagnosing of cerebral ischemia. Method： 60 patients with cerebral infarction were selected at random. Two MR doctors with experience studied the FSE and Fast FLAIR SEQUENCE IMAGING AND MADE DIAGNOSIS BY GRADE.Results： Lesions in FSE sequence appeared lightly hlgh signal and the borders were vague, while in FLAIR sequence appeared higher signal and the I：orders were clear. Some lesions suspected in FSE were displayed clearly in FLAIR. According to statistics, FLAIR sequence was more efficency than FSE sequence except of doctor＇ s factor. Conclusion： FLAIR sequence offers advantages for the detection of cerebral ischemia than FSE sequence. It should be applied as routine sequence in MR examinations.