FLAIR主要技术参数的实验性研究

目的探讨磁共振成像的FLAIR主要参数与抑制效果的关系。方法实验在0.5T磁共振机上进行配制不同物态、浓度的蛋白质溶液,采用试管模拟扫描试验法及不同的参数进行FLAIR扫描,通过比较筛选出最佳扫描参数,分析总结其相关性。结果FLAIR的最佳技术参数为:TR=4000～5000ms,TE=90～100ms,TI=1800～2000ms。结论TI是决定抑制效果的关键参数,TR、TE仅决定扫描时间和扫描层数。FLAIR抑制效果稳定,能估测蛋白质溶液中的蛋白含量。

The Experimental Research of Primary Technique Parameter in Fluid Attenuated Inversion Recovery

Objective To study the correlation between the main parameters and the effect of repression in MR fluid attenuated inversion recovery(FLAIR).Methods 0.5 unit was used in this experiment.The protein aqua of different material appearance and concentration was prepared.FLAIR was performed using the tube imitative experimented method and with different paramters.The best scan parameters were selected by comparison each other and their relativity was analysed.Results The best technical parameters:TR=4000~5000 ms,TE=90~100 ms,TI=1800~2000 ms.Conclusion TI is the key parameter in determining the repression effect,TR and TE only determine the scans time and layer number.FLAIR's repress result is stable,and it can estimate the protein content in the protein aqua.