快速液体衰减翻转恢复脉冲序列在颅脑MRI的应用  

Application of Fast Fluid Attenuated Inversion Recovery Pulse Sequences in MRI of the Brain

作　　者：全世杰[1] 王世山[1] 董光[1] 孙希芹[1] 郑岗[1] 高伟[1] 

机构地区：[1]山东省潍坊市人民医院放射科MR室

出　　处：《临床放射学杂志》1999年第3期140-142,共3页Journal of Clinical Radiology

摘　　要：目的：探讨快速液体衰减翻转恢复序列（ＦａｓｔＦＬＡＩＲ）在颅脑ＭＲＩ中的临床应用价值。材料与方法：对本组３３例经ＦａｓｔＦＬＡＩＲ序列及常规ＳＥ序列扫描的病例进行对比分析，并结合文献讨论了ＦａｓｔＦＬＡＩＲ序列的原理、图像特点及临床应用价值。结果：ＦａｓｔＦＬＡＩＲ显示病变为９７．８０％（８９／９１），常规ＳＥ序列为８３．５２％（７６／９１）；内部结构与边缘情况均显示良好者，ＦａｓｔＦＬＡＩＲ序列为１９．７８％（１８／９１），常规ＳＥ序列为７．６９％（７／９１）。二者在显示病变方面有显著差异（０．０１＜Ｐ＜０．０５）。ＦａｓｔＦＬＡＩＲ序列在显示小病灶及脑表病灶、脑室内病灶方面优于常规ＳＥ序列。结论：ＦａｓｔＦＬＡＩＲ序列在显示病变方面更敏感，且能获得更多病理信息。Objective: To evaluate the clinical application of fast fluid attenuated inversion recovery (Fast FLAIR) pulse sequence in MR imaging of the brain.Materials and Methods:The 33 cases with fast FLAIR sequence and conventional SE sequence were analysed and compared with each other. The principle, features of the image, and clinical application value of fast FLAIR pulse sequences were discussed, combined with review of literature.Results:The lesions were detected in 97.80% (89/91) with fast FLAIR, and in 83.52% (76/91) with conventional SE; the lesions, which intrinsic structure and border were visualized clearly, were 19.78% (18/91) with fast FLAIR, and 7.69% (7/91) with conventional SE. The difference between the two groups was statistically significant (0.01<P<0.05). Conclusion: Fast FLAIR is superior to conventional SE pulse sequences for detecting small lesions, lesions close to encephalic surface, and intraventricular lesions. Fast FLAIR is more sensitive in detecting lesions than SE, and can provide more information of histopathology.

关 键 词：颅脑 磁共振成像 FLAIR 

分 类 号：R445.2[医药卫生—影像医学与核医学]