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目的：探讨快速ＦＬＡＩＲ序列ＭＲＩ在脑梗塞诊断中的应用价值。材料和方法：对３５例脑梗塞患者行颅脑常规ＳＥ序列和快速ＦＬＡＩＲ序列ＭＲＩ检查，并对比分析常规Ｔ２Ｗ与ＦＬＡＩＲ成像对病变的显示能力。结果：ＭＲＩ共发现５０个脑梗塞灶。除２个病灶外，４８个病灶ＦＬＡＩＲ成像较ＳＥ序列Ｔ２Ｗ成像显示更为清晰明确，其中３个皮层／皮层下病灶和１个脑室旁病灶仅为ＦＬＡＩＲ成像显示；ＳＥ序列Ｔ２Ｗ与ＦＬＡＩＲ成像显示病变病灶范围大致相仿；１１个陈旧性脑梗塞灶在ＦＬＡＩＲ成像表现为低信号或低、高混杂信号。结论：快速ＦＬＡＩＲ序列对脑梗塞，尤其是脑皮层和脑室旁病灶的显示较常规ＳＥ序列具有更高的敏感性；ＦＬＡＩＲ序列有助于鉴别急性或陈旧性脑梗塞。
Objective: To investigate the value of rapid FLAIR sequence MRI in the diagnosis of cerebral infarction. MATERIALS AND METHODS: Thirty-five patients with cerebral infarction underwent routine cranial brain SE sequence and rapid FLAIR sequence MRI examinations, and compared conventional T2W with FLAIR imaging to display the lesion ability. Results: Fifty cerebral infarctions were found by MRI. FLAIR imaging of 48 lesions was clearer than T2W imaging of SE sequence except for 2 lesions. Three cortical / subcortical lesions and one paraventricular foci showed only FLAIR imaging. T2W and FLAIR images of SE showed lesions The extent of the lesions was roughly the same; 11 old cerebral infarcts showed low or low and high promiscuous signals in FLAIR imaging. CONCLUSIONS: The rapid FLAIR sequence is more sensitive to cerebral infarction, especially cerebral cortex and paraventricular foci than conventional SE sequences; the FLAIR sequence is useful in differentiating acute or old cerebral infarctions.