基于哈德曼编码的新型高分辨定域谱

doi:10.11938/cjmr20192780

波谱学杂志 ›› 2020, Vol. 37 ›› Issue (4): 524-532.doi: 10.11938/cjmr20192780

基于哈德曼编码的新型高分辨定域谱

柯汉平¹, 蔡宏浩²

1. 宁德师范学院信息与机电工程学院, 福建宁德 352000;
2. 集美大学理学院, 福建厦门 361021

收稿日期:2019-09-02 出版日期:2020-11-05 发布日期:2019-12-13
通讯作者: 蔡宏浩,Tel:13696991976;E-mail:hhcai@jmu.edu.cn. E-mail:hhcai@jmu.edu.cn
基金资助:
福建省科技厅资助项目（2016J01674）；福建省中青年教师基金资助项目（JAT160542）；宁德师范学院青年教师基金资助项目（2016Q58）；国家自然科学基金资助项目（11705068）；福建省自然科学基金资助项目（2017J05011）.

High-Resolution Localized NMR Spectroscopy Based on Hadamard-Encoding

KE Han-ping¹, CAI Hong-hao²

1. College of Information and Mechanical & Electrical Engineering, Ningde Normal University, Ningde 352000, China;
2. School of Science, Jimei University, Xiamen 361021, China

Received:2019-09-02 Online:2020-11-05 Published:2019-12-13

摘要/Abstract

摘要： 核磁共振（NMR）技术作为一种非植入无损伤的检测技术，已经广泛应用于化学、生物和医学等领域.本文基于哈德曼（Hadamard）编码的分子间单量子相干（iSQC）技术提出了一种新的序列，首先从理论上对该序列进行了简要的分析并阐明其原理，然后用套管模型实验和脑模型实验验证该序列在不均匀磁场下准确定域和快速获取高分辨谱的能力.实验表明，该序列在不均匀磁场下可以快速获取高分辨定域谱，同时抑制溶剂峰信号，具备一定的应用价值.

关键词: 核磁共振（NMR）, 哈德曼（Hadamard）编码, 分子间单量子相干（iSQC）, 定域谱, 不均匀磁场

Abstract: Nuclear magnetic resonance (NMR) is a non-invasive technology which has been widely used in chemical, biological and medical researches. This paper presents a new NMR pulse sequence based on Hadamard spatial encoding and intermolecular single-quantum coherence (iSQC) transfer. The principle of the sequence was analyzed and the theoretical considerations were presented. The performance of the sequence in accurate spatial localization and fast acquisition under inhomogeneous magnetic field were verified with phantom experiments and the brain metabolites experiments. The results demonstrated that the sequence can quickly obtain high-resolution localized spectra under inhomogeneous magnetic fields, while suppressing the solvent peaks efficiently.

Key words: nuclear magnetic resonance (NMR), Hadamard-encoding, intermolecular single-quantum coherence (iSQC), localized spectrum, inhomogeneous magnetic field

中图分类号:

O482.53

柯汉平, 蔡宏浩. 基于哈德曼编码的新型高分辨定域谱[J]. 波谱学杂志, 2020, 37(4): 524-532.

KE Han-ping, CAI Hong-hao. High-Resolution Localized NMR Spectroscopy Based on Hadamard-Encoding[J]. Chinese Journal of Magnetic Resonance, 2020, 37(4): 524-532.

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基于哈德曼编码的新型高分辨定域谱

High-Resolution Localized NMR Spectroscopy Based on Hadamard-Encoding

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