3.0T磁共振相控阵线圈信噪比计算方法的定量对比研究  

Quantitative Comparison Study on the SNR Method of Phased-array Coil in 3.0 T MRI

作　　者：王龙辰[1] 金玮[1] 李逸明[1] 李斌[1] 

机构地区：[1]上海交通大学附属第六人民医院医学装备处,上海市200233

出　　处：《中国医疗器械杂志》2013年第1期10-13,共4页Chinese Journal of Medical Instrumentation

基　　金：上海市科委研究基金项目(11441901602)

摘　　要：采用对ACR单幅图像法和NEMA两幅图像法两种相控阵线圈进行信噪比测量,计算得到两种方法的相关性方程,并对两种方法进行相互可替代性分析。结果表明两者在评价线圈性能上具有可替代性,但由于消除了系统的结构噪声,使NEMA两幅图像法的测量结果高于ACR单幅图像法。In this paper, ACR single image method and NEMA dual-image method were measured SNR using two types of phased-array coils. The correlation equation of the two methods was obtained and substitutability of two methods was analyzed. The results showed that the two methods are replaceable in the evaluation of coils, but the later method gets higher SNR than the first method because structure noise is eliminated.

关 键 词：信噪比 相控阵 射频线圈 

分 类 号：R445.2[医药卫生—影像医学与核医学]