快速FLAIR序列在颅脑MRI中的应用

The clinical application of fast FLAIR technique in MRI of the brain

目的：探讨快速液体衰减反转恢复序列（ｆｌｕｉｄａｔｅｎｕａｔｅｄｉｎｖｅｒｓｉｏｎｒｅｃｏｖｅｒｙ，ＦＬＡＩＲ）在脑部疾病中的应用价值。方法：对３９例脑部疾病患者同时行常规ＭＲＴ２加权像及快速ＦＬＡＩＲ检查，比较两种序列对病灶的显示情况。结果：ＦＬＡＩＲ共检出病灶３１０个，常规Ｔ２加权像检出２３７个，ＦＬＡＩＲ显示病灶的轮廓更为清晰，病灶与正常脑组织的对比度更高，在显示脑组织深部皮层下、脑室旁病灶方面更有优势，可显示常规ＭＲＴ２加权像未能显示的侧裂池及脑表面脑沟的小出血病灶。结论：快速ＦＬＡＩＲ可作为颅脑ＭＲ检查常规序列的补充，有助于提高病变的检出率，减少漏诊。

Purpose:To study the value of clinical application of fast FLAIR (fluid attenuated inversion recovery) in cerebral disease.Methods:39 patients were studied with MR T 2WI and FLAIR simutaneously.The mode of presentation of the lesions were compared.Results:310 lesions were displayed with FLAIR and 237 with T 2WI.The contours of the lesions were clearer in FLAIR than that showed in T 2WI.The contrast of lesion to normal and lesion to CSF (cerebrospinal fluid) were higher in FLAIR,which is particular of superiority to demonstrate lesions in the white matter or paraventricular area. Small hemorrhagic foci in Sylvian fissure and the cerebral sulci can be shown in FLAIR.Conclusion:As a complementary technique to conventional MR imaging, FLAIR is useful to improve the detection of the lesions.