非线性梯度场下并行成像技术进展  

Progress of parallel imaging technology in nonlinear gradient field

作　　者：徐雅洁[1] 祝祯伟[1] 田浩然[1] 张广才[1] 常严[1] 杨晓冬[1] 

机构地区：[1]中国科学院苏州生物医学工程技术研究所医学影像室,江苏苏州215163

出　　处：《中国医学影像技术》2012年第11期2098-2101,共4页Chinese Journal of Medical Imaging Technology

基　　金：国家自然科学基金(11105096);苏州市应用基础科技项目(SYG201125)

摘　　要：随着高场MR设备的普及,由于传统梯度场的发展受到人体外周神经刺激(PNS)阈值的限制,使对快速成像技术的需求十分迫切,非线性梯度场并行成像技术由此得到越来越多的关注。本文介绍梯度场构建、并行接收、采样轨迹以及图像重建算法等技术,对非线性梯度场下并行成像技术的研究现状进行综述。With the popularity of high-field magnetic resonance devices, traditional gradient-field imaging has been limit- ed because of the human peripheral nerve stimulation （PNS） threshold, so that fast imaging technology is urgently needed. The non-linear gradient field parallel imaging technique has attracted much more attentions. Recent progress of non-linear gradient field parallel imaging technology, including the gradient field construction, parallel receive technology, sampling trajectory and image reconstruction algorithms were reviewed in this article.

关 键 词：磁共振成像 非线性梯度场 并行成像 图像重建算法 

分 类 号：R445.2[医药卫生—影像医学与核医学]