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目的：探讨长回波时间的液体抑制反转恢复脉冲序列（ＦＬＡＩＲ）对脑梗塞的诊断及鉴别诊断价值。材料和方法：对２１例经常规ＭＲＩ诊断为脑梗塞的患者进行ＦＬＡＩＲ序列成像，并与ＳＥ序列Ｔ２加权像比较。结果：在２１例脑梗塞病例中，ＦＬＡＩＲ显示病变较Ｔ２加权像清楚明确的１７例（占８１．０％）。Ｔ２加权像难以发现病灶的（＞１个）１５例占７１．４％。结论：ＦＬＡＩＲ序列对脑梗塞病变的显示具有更高的敏感性。特别适合于发现大脑半球表面、基底池周围、灰白质交界及脑室旁区的微小病变。且对梗塞病灶的分期、脑表面梗塞灶与蛛网膜下腔扩大，囊肿的鉴别有帮助。
Objective: To investigate the diagnostic value of FLAIR in diagnosis and differential diagnosis of cerebral infarction with long echo time. MATERIALS AND METHODS: FLAIR imaging was performed on 21 patients with cerebral infarction diagnosed by routine MRI and compared with T2 weighted images of SE sequence. Results: In 21 cases of cerebral infarction, FLAIR showed 17 cases (81.0%) with clear and definite lesions compared with T2 weighted images. Fifty-two patients (71.4%) had lesions that were difficult to detect on T2-weighted images (> 1). Conclusion: The FLAIR sequence is more sensitive to the appearance of cerebral infarction. Particularly suitable for the discovery of the surface of the cerebral hemispheres, basal cistern, the junction of gray matter and ventricular paraventricular lesions. And infarction lesions staging, brain surface infarction and subarachnoid expansion, the identification of cysts helpful.