低场核磁共振二维谱反演技术及其应用

Inversion Technology of 2D NMR Relaxometry in Low Field and Its Applications

针对二维谱技术的特点和优势,将其引入到不同的应用领域中,验证了二维谱技术的可靠性和实用性。首先回顾了一种以将拟合误差控制在与噪声相当的水平为基本目标的二维反演算法,然后通过仿真实验验证了该算法的准确性,最后使用该算法获取的二维谱进行了一系列的应用分析。应用案例包括造影剂浓度选择、工业明胶与食用明胶鉴别以及储层产能评估等,涉及到医学成像、食品药品、能源等多个领域。仿真实验和多个应用案例的结果表明,该方法具有很好的鲁棒性和准确性,能够适用不同信噪比数据的反演,具有实际应用价值。

This paper explores the practical ability of 2D nclear magnetic resonance （NMR） relaxometry inversion based on the features and advantages of 2D maps. An inversion algorithm aims to make the misfit comparable to noise level was cast in light firstly. Then some synthetic data was handled with this algorithm to get the accurate 2D relaxometry spectrum. Lastly, this technology was applied to many practical cases in the field of medical imaging, food and medicine, energy and so on. The results of synthetic data and experimental data show that the proposed method has a good robustness and an exact accuracy. The 2D NMR relaxometry including the inversion technology has a great potential value of practical applications.