Selecting ordered environments in NMR of spin 3/2 nuclei via frequency-sweep pulses

被引：12

作者：

Ling, W ^{[1
]}

Jerschow, A ^{[1
]}

机构：

[1] NYU, Dept Chem, New York, NY 10003 USA

来源：

JOURNAL OF MAGNETIC RESONANCE | 2005年 / 176卷 / 02期

基金：

美国国家科学基金会;

关键词：

sodium MRI; contrast mechanism; double-quantum filter; satellite transitions; quadrupolar coupling; double-frequency sweep;

D O I：

10.1016/j.jmr.2005.06.006

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

We demonstrate that frequency-swept pulses can be used for the selective and enhanced detection of quadrupolar nuclei located in anisotropic environments. The primary driving force for this technique development is the field of sodium-MRI, where sodium signals from locally ordered environments are known to be diagnostic of cartilage defects. We demonstrate here simple one-dimensional images of model systems, in which the signals from free sodium ions are suppressed, while ordered sodium is detected via the narrow central transition signal. (c) 2005 Elsevier Inc. All rights reserved.

引用

收藏

页码：234 / 238

页数：5

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