低场磁共振FLAIR序列在脑肿瘤中的应用

目的评价液体衰减反转恢复（FLAIR）序列在低场MR中对脑肿瘤的应用价值。方法50例脑肿瘤患者，均进行FLAIR序列和FSE-T2WI检查，比较两种序列对病灶的显示能力。结果FLAIR序列显示病灶64个（100％），而FSE-T2WI仅显示病灶56个（87．5％）；FLAIR序列显示病灶内部结构及边缘良好者为46个（71．88％），FSE-T2WI显示病灶内部结构及边缘良好者为27个（42．19％），在显示病变内部结构及边缘清晰度方面，FLAIR序列优于FSE-T2WI（P〈0．01）。结论在低场MR中，FLAIR序列图像有助于区分瘤体与水肿、显示肿瘤内部结构。因此FLAIR序列应该成为检查脑肿瘤的常规序列。

Application of Fluid-attenuated Inversion Recovery(FLAIR) Sequence in Cerebral tumor Using Low Field Strength MR

Objective: To evaluate the value of fluid-attenuated inversion-recovery(FLAIR) sequences in cerebral tumor with low field strength MRI.Methods: 50 patients with cerebral tumor were studied with MR FSE-T2WI and FLAIR technique.The detectable abilities of lesions with FLAIR and FSE-T2WI were compared.Results: The FLAIR image showed 64 lesions(100%),but the FSE-T2WI only showed 56 lesions(87.5%).46 lesions(71.88%)were clear with FLAIR in demonstrating the intrinsic structure and border of lesions,and 27 ones(42.19%)with FSE-T2WI.Therefore,the FLAIR images were superior to FSE-T2WI in demonstrating the intrinsic structure and border of lesions(P<0.01).Conclusion: In low field MR of the brain,FLAIR sequence was helpful to differentiate the tumor from edema,visualize the intrinsic structure of lesions.Therefore,FLAIR should become a conventional sequence in the diagnosis of cerebral tumor.