| 反演与拟合相结合处理核磁共振弛豫数据的方法 |
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| 引用本文： | 王鹤,李鲠颖. 反演与拟合相结合处理核磁共振弛豫数据的方法[J]. 物理学报, 2005, 54(3): 1431-1436 |
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| 作者姓名： | 王鹤 李鲠颖 |
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| 作者单位： | 华东师范大学光谱学与波谱学教育部重点实验室，物理系，上海200062 |
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| 摘 要： | 讨论非负最小二乘（NNLS）法和非线性拟合在分析处理核磁共振（NMR）弛豫数据中的应用.同时将二者结合，提出用NNLS的反演结果来设定非线性拟合初值的方法，并用计算机模拟和实验证明了该方法在分析处理NMR弛豫数据中的有效性.关键词：非负最小二乘法非线性拟合核磁共振弛豫时间
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| 关 键 词： | 非负最小二乘法 非线性拟合 核磁共振 弛豫时间 |
| 文章编号： | 1000-3290/2005/54(03)/1430-06 |
| 收稿时间： | 2004-06-21 |
Combination of inversion and fitting as an effective method for the analysis of NMR relaxation data |
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| Wang He,LI Geng-ying. Combination of inversion and fitting as an effective method for the analysis of NMR relaxation data[J]. Acta Physica Sinica, 2005, 54(3): 1431-1436 |
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| Authors: | Wang He LI Geng-ying |
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| Abstract: | A method is proposed for analyzing the NMR relaxation data. The procedure includes using the nonnegative least squares (NNLS) to determine roughly the relaxation time values. Then those values are used as the initial parameters of the nonlinear fitting computation. As a result, accurate relaxation time data can be conveniently obtained without any pre knowledge of the sample. This method is verified and demonstrated by computer simulations and NMR experimental results. |
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| Keywords: | nonnegative least-squares method nonlinear fitting nuclear magnetic resonance relaxation time |
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