The Application of Proton-Electron Double-Resonance Imaging Techniques to Proton Mobility Studies
The Application of Proton-Electron Double-Resonance Imaging Techniques to Proton Mobility Studies
复制标题
质子电子双共振成像技术在质子淌度研究中的应用
DOI：
10.1006/jmrb.1994.1082
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
F. Robb
中科院分区：
文献类型：
--
作者：
I. Nicholson;D. J. Lurie;F. Robb
摘要提出了一种利用质子-电子双共振成像（PEDRI）分析自由基分布的方法。图像强度对质子迁移率的依赖性的样品内的氮氧自由基TEMPOL在不同粘度的水/甘油混合物的样品证明。根据在10 mT的固定磁场强度下获得的图像，确定负责图像对粘度的依赖性的参数。场循环技术被用来测量这种依赖性作为磁场强度的函数，以定义一个单一的参数，反映在未知浓度的样品内的质子迁移率的变化。
Abstract A method of analyzing NMR images obtained using proton-electron double-resonance imaging (PEDRI) to image free-radical distributions is presented. The dependence of image intensity on proton mobility within the sample is demonstrated for samples of the nitroxide free radical TEMPOL in water/glycerol mixtures of different viscosities. From the images obtained at a fixed magnetic field strength of 10 mT, the parameters which are responsible for the image dependence on viscosity are determined. Field-cycling techniques are used to measure this dependence as a function of magnetic field strength with a view to defining a single parameter reflecting changes in proton mobility within a sample of unknown concentration.