| 高场强核磁共振下测量水的自旋晶格弛豫时间 |
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| 引用本文： | 向俊锋,唐亚林.高场强核磁共振下测量水的自旋晶格弛豫时间[J].波谱学杂志,2010,27(1):126-131. |
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| 作者姓名： | 向俊锋 唐亚林 |
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| 作者单位： | 北京分子科学国家实验室,分子科学中心,中国科学院,化学研究所,北京100190;北京分子科学国家实验室,分子科学中心,中国科学院,化学研究所,北京100190 |
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| 摘 要： | 在反转恢复脉冲序列中增加双极性梯度场脉冲以压制辐射阻尼效应,从而使之能够在高场强核磁共振波谱仪(Bruker AV600)中较为准确测量水的自旋-晶格时间.这一方法应用于商品化成像对比剂Gd-DTPA的弛豫率测试,得到的结果和文献相似,证实了该方法的可靠性.进一步应用于新合成成像对比剂TEMDP-EMFs性能的评价.
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| 关 键 词： | 核磁共振(NMR) 自旋-晶格弛豫时间 反转恢复 辐射阻尼效应 |
| 收稿时间： | 2009-12-15 |
Determination of Spin-Lattice Relaxation Time of Water under High Magnetic Field |
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| XIANG Jun-Feng,TANG Ya-Lin.Determination of Spin-Lattice Relaxation Time of Water under High Magnetic Field[J].Chinese Journal of Magnetic Resonance,2010,27(1):126-131. |
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| Authors: | XIANG Jun-Feng TANG Ya-Lin |
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| Institution: | Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | The inversion-recovery pulse sequence used for routine measurement of spin-lattice relaxation time(T1) was modified to measure T1 of water under high magnetic field(14.1 T).A pair of bipolar pulsed field gradients were added to suppress the effects of radiation damping,which often occurs with concentrated sample such as water.With this method,the relaxivity of commercial magnetic resonance imaging(MRI) contrast agent Gd-DTPA in aqueous solution was measured and found to be similar to the value reported in t... |
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| Keywords: | NMR spin-lattice relaxation time inversion recovery radiation damping |
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