FLAIR和FSE序列在早期脑梗死临床诊断中的应用价值比较

目的:比较FLAIR序列和FSE序列T1WI、T2WI在早期脑梗塞中的临床应用价值。方法:收集40例早期脑梗塞患者,其中超急性期(<6h)4例,急性期(6h～72h)36例。每一例患者均先后进行FSE序列T1WI、T2WI和FLAIR扫描,对FLAIR序列上的异常信号与FSE序列T1WI、T2WI上的异常信号作对比分析。结果:4例超急性期患者,FLAIR序列显示2例异常信号,FSE序列无1例发现异常信号。36例急性期脑梗死,FLAIR发现34例,FSE序列发现32例。FLAIR序列对脑梗死病灶的显示比T1WI和T2WI更清晰。结论:FLAIR序列诊断早期脑梗死优于FSE序列T1WI、T2WI,特别对检出脑皮层和脑室旁病灶更佳。

Comparison of the clinical value of FLAIR and FSE in diagnosing early cerebral infarction

Objective: To compare the clinical value of FLAIR and FSE sequence T 1WI、T 2WI in the diagnosis of early cerebral infarction. Methods: Among 40 patients with early cerebral infarction, 4 cases belong to superacute stage (<6h), 36 cases are acute stage (6h~72h). All of the patients were examined with FLAIR sequence, FSE T 1WI and T 2WI. Results: 2 of 4 cases with superacute cerebral infarction demonstrated abnormal high signal on FLAIR sequence, but 4 cases of superacute cerebral infarction demonstrated normally on FSE sequence. 34 and 32 of 36 patients with acute cerebral infarction showed abnormal signal on FLAIR and FSE sequences respectively. The extent and contrast of lesions on FLAIR sequence were demonstrated clearer than on FSE T 1WI and T 2WI. Conclusion: FLAIR sequence is superior to FSE T 1WI and T 2WI in diagnosing early cerebral infarction, especially for cortical and paraventricular lesions.