快速液体衰减反转回复序列技术在脑部疾病中的应用

对76例脑部疾病患者进行快速液体衰减反转恢复序列(fluid attenuated inversion recovery，FLAIR)序列及常规快速自旋回波(fast spin echo，FSE)序列扫描，比较两种序列对病灶的显示情况。结果发现。在76例脑部疾病中，FLAIR共显示病灶172个，而B加权像(T2WI)只显示123个。FAST FLAIR显示病灶较T2WI清楚明确。在FAST FLAIR上病灶与正常脑组织的对比度更高。FLAIR技术对颅脑病变的显示优于FSE序列T2加权像，特别是对脑表面或脑室周围病灶的显示，FLAIR有很高的临床使用价值，可作为颅脑MR检查常规序列的重要补充。

Application of fast fluid-attenuated inversion recovery(FLAIR) pulse sequence in cerebral disease

patients were studied with fast FLAIR sequence and T2-weighted fast spin-echo sequence prospectively- and a comparison between T2-weighted imaging(T2WI) and fast FLAIR imaging was made. Results revealed that FLAIR sequence detected 172 focus of disease- whereas T2-weighted fast spin- echo sequence detected 123 focus of disease. The former was more sensitive than the later. The extent and border of the lesions on FLAIR images were showed better than on T2WI. The constrast of lesion-to-normal and lesion-to-CSF(cerebrospinal fluid)were higher in FLAIR. The lesions of the brain were better demonstrated by FLAIR sequence than T2WI- espically in the case while the lesions were around the cerebral surface or ventricle. FLAIR has high clinical value in diagnosing brain disease- and it is an important complementary technique for rountine SE sequence.