基于分子间多量子相干的矢量场磁共振成像模拟  

Simulation of Vector Field Magnetic Resonance Imaging Based on Inter-Molecular Multiple-Quantum Coherences

作　　者：蔡聪波[1] 蔡淑惠[2] 董继扬[2] 陈忠[2] 

机构地区：[1]厦门大学通信工程系,福建厦门361005 [2]厦门大学物理系,福建厦门361005

出　　处：《波谱学杂志》2007年第4期394-400,共7页Chinese Journal of Magnetic Resonance

基　　金：国家自然科学基金(10605019);福建省自然科学基金(T0750015)资助项目

摘　　要：对基于分子间多量子相干的矢量场成像进行了系统的模拟研究.模拟结果表明:这类成像能够对几十微米量级的异质结构进行成像,并较好地抑制来自均匀介质的信号.即使不存在梯度磁场情况下,通过相位循环该方法亦可实现对异质结构的成像.这将有助于开拓基于分子间多量子相干成像的应用领域,深化对其成像机制的理解.In this paper, a comprehensive simulation of the vector field imaging based on the inter-molecular multiple quantum coherences （iMQC） was performed. The results showed that this imaging technique can be applied to image heterogeneities on the scale of dozens of micrometers, with adequate suppression of the signals from homogeneous medium. It was shown that iinaging of field heterogeneities can also be achieved through phase cycling even without correlation gradients. These results would be of great help in extending the applications of iMQC imaging and in further understanding the mechanism underlying iMQC imaging.

关 键 词：分子间多量子相干 矢量场 成像 模拟 

分 类 号：O482.53[理学—固体物理]