A robust automatic phase correction method for signal dense spectra
文献类型：期刊论文
| 作者 | Bao, Qingjia1,2; Feng, Jiwen1; Chen, Li1; Chen, Fang1; Liu, Zao1; Jiang, Bin1 ; Liu, Chaoyang1,2
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| 刊名 | JOURNAL OF MAGNETIC RESONANCE
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| 出版日期 | 2013-09-01 |
| 卷号 | 234页码:82-89 |
| 关键词 | Automatic phase correction NMR Coarse tuning Fine tuning Negative penalty Metabonomics study |
| 英文摘要 | A robust automatic phase correction method for Nuclear Magnetic Resonance (NMR) spectra is presented. In this work, a new strategy combining 'coarse tuning' with 'fine tuning' is introduced to correct various spectra accurately. In the 'coarse tuning' procedure, a new robust baseline recognition method is proposed for determining the positions of the tail ends of the peaks, and then the preliminary phased spectra are obtained by minimizing the objective function based on the height difference of these tail ends. After the 'coarse tuning', the peaks in the preliminary corrected spectra can be categorized into three classes: positive, negative, and distorted. Based on the classification result, a new custom negative penalty function used in the step of 'fine tuning' is constructed to avoid the negative peak points in the spectra excluded in the negative peaks and distorted peaks. Finally, the fine phased spectra can be obtained by minimizing the custom negative penalty function. This method is proven to be very robust for it is tolerant to low signal-to-noise ratio, large baseline distortion and independent of the starting search points of phasing parameters. The experimental results on both 1D metabonomics spectra with over-crowded peaks and 2D spectra demonstrate the high efficiency of this automatic method. (C) 2013 Elsevier Inc. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology |
| 类目[WOS] | Biochemical Research Methods ; Physics, Atomic, Molecular & Chemical ; Spectroscopy |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Physics ; Spectroscopy |
| 关键词[WOS] | BASE-LINE-CORRECTION ; FT NMR-SPECTRA ; RESONANCE MASS-SPECTRA ; SPECTROSCOPY ; TRANSFORM ; MINIMIZATION ; ALGORITHM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000323085800010 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/861]  |
| 专题 | 武汉物理与数学研究所_高技术创新与发展中心 |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Qingjia,Feng, Jiwen,Chen, Li,et al. A robust automatic phase correction method for signal dense spectra[J]. JOURNAL OF MAGNETIC RESONANCE,2013,234:82-89. |
| APA | Bao, Qingjia.,Feng, Jiwen.,Chen, Li.,Chen, Fang.,Liu, Zao.,...&Liu, Chaoyang.(2013).A robust automatic phase correction method for signal dense spectra.JOURNAL OF MAGNETIC RESONANCE,234,82-89. |
| MLA | Bao, Qingjia,et al."A robust automatic phase correction method for signal dense spectra".JOURNAL OF MAGNETIC RESONANCE 234(2013):82-89. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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