Journal of magnetic resonance最新文献_第10页

Development of a Helmet-Shape Dual-Channel RF coil for brain imaging at 54 mT using inverse boundary element method 利用反边界元法开发用于 54 mT 脑成像的头盔形双通道射频线圈

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-14 DOI: 10.1016/j.jmr.2024.107636

Fanqin Meng , Yi Guo , He Wei , Zheng Xu

{"title":"Development of a Helmet-Shape Dual-Channel RF coil for brain imaging at 54 mT using inverse boundary element method","authors":"Fanqin Meng , Yi Guo , He Wei , Zheng Xu","doi":"10.1016/j.jmr.2024.107636","DOIUrl":"10.1016/j.jmr.2024.107636","url":null,"abstract":"<div><p>Very-low field (VLF) magnetic resonance imaging (MRI) offers advantages in term of size, weight, cost, and the absence of robust shielding requirements. However, it encounters challenges in maintaining a high signal-to-noise ratio (SNR) due to low magnetic fields (below 100 mT). Developing a close-fitting radio frequency (RF) receive coil is crucial to improve the SNR. In this study, we devised and optimized a helmet-shaped dual-channel RF receive coil tailored for brain imaging at a magnetic field strength of 54 mT (2.32 MHz). The methodology integrates the inverse boundary element method (IBEM) to formulate initial coil structures and wiring patterns, followed by optimization through introducing regularization terms. This approach frames the design process as an inverse problem, ensuring a close fit to the head contour. Combining theoretical optimization with physical measurements of the coil's AC resistance, we identified the optimal loop count for both axial and radial coils as nine and eight loops, respectively. The effectiveness of the designed dual-channel coil was verified through the imaging of a CuSO4 phantom and a healthy volunteer's brain. Notably, the in-vivo images exhibited an approximate 16–25 % increase in SNR with poorer B<sub>1</sub> homogeneity compared to those obtained using single-channel coils. The high-quality images achieved by T1, T2-weighted, and fluid-attenuated inversion-recovery (FLAIR) protocols enhance the diagnostic potential of VLF MRI, particularly in cases of cerebral stroke and trauma patients. This study underscores the adaptability of the design methodology for the customization of RF coil structures in alignment with individual imaging requirements.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"360 ","pages":"Article 107636"},"PeriodicalIF":2.2,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139881835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calibration of the coil constants and nonorthogonal angles of triaxial NMR coils based on in-situ EPR magnetometers 基于现场 EPR 磁强计校准三轴 NMR 线圈的线圈常数和非正交角

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-14 DOI: 10.1016/j.jmr.2024.107634

Shaofeng Jie , Zhanchao Liu , Jingsong Wang , Shuai Zhang , Kangnan Zhao

{"title":"Calibration of the coil constants and nonorthogonal angles of triaxial NMR coils based on in-situ EPR magnetometers","authors":"Shaofeng Jie , Zhanchao Liu , Jingsong Wang , Shuai Zhang , Kangnan Zhao","doi":"10.1016/j.jmr.2024.107634","DOIUrl":"https://doi.org/10.1016/j.jmr.2024.107634","url":null,"abstract":"<div><p>Triaxial magnetic field coils are one of the most important components of magnetic resonance sensors. Traditional measurement methods for coil constants and non-orthogonal angles using fluxgate magnetometers are no longer suitable for small-volume nuclear magnetic resonance sensors. This study presents a method for measuring the coil constants and nonorthogonal angles of triaxial nuclear magnetic resonance coils using the dynamics of the electron paramagnetic resonance magnetometer without requiring any additional calibration equipment. After constructing the in-situ magnetometer, we measured the coil constants of the <em>z</em>- and the <em>x-</em>axes as 1189 nT/mA and 45.53 nT/mA, respectively. We obtained the nonorthogonal angle of approximately 0.18° between the <em>z</em>-axis and the <em>x-y</em> plane with a standard deviation of about 0.03° by solving the relevant trigonometric function. Additionally, the non-orthogonal angle between the <em>x</em>- and <em>y</em>-axes is approximately 1.70° with a standard deviation of about 0.17°. This study is significant for evaluating and reducing signal crosstalk errors and improving the accuracy of NMR sensors.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"360 ","pages":"Article 107634"},"PeriodicalIF":2.2,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139744307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal sensitivity for 1H detected relayed DNP of organic solids at fast MAS 快速 MAS 条件下有机固体 1H 检测中继 DNP 的最佳灵敏度

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-14 DOI: 10.1016/j.jmr.2024.107645

Saumya Badoni, Pierrick Berruyer, Lyndon Emsley

{"title":"Optimal sensitivity for 1H detected relayed DNP of organic solids at fast MAS","authors":"Saumya Badoni, Pierrick Berruyer, Lyndon Emsley","doi":"10.1016/j.jmr.2024.107645","DOIUrl":"10.1016/j.jmr.2024.107645","url":null,"abstract":"<div><p>Dynamic nuclear polarization (DNP) combined with high magnetic fields and fast magic angle spinning (MAS) has opened up a new avenue for the application of exceptionally sensitive <sup>1</sup>H NMR detection schemes to study protonated solids. Recently, it has been shown that DNP experiments at fast MAS rates lead to slower spin diffusion and hence reduced DNP enhancements for impregnated materials. However, DNP enhancements alone do not determine the overall sensitivity of a NMR experiment. Here we measure the overall sensitivity of one-dimensional <sup>1</sup>H detected relayed DNP experiments as a function of the MAS rate in the 20–60 kHz regime using 0.7 mm diameter rotors at 21.2 T. Although faster MAS rates are detrimental for the DNP enhancement on the target material, due to slower spin diffusion, we find that with increasing spinning rates the gain in sensitivity due to <sup>1</sup>H line-narrowing and the folding-in of sideband intensity compensates a large part of the loss of overall hyperpolarization. We find that sensitivity depends on the atomic site in the molecule, and is maximised at between 40 and 50 kHz MAS for the sample of L-histidine.HCl·H<sub>2</sub>O studied here. There is a 10–20 % difference in sensitivity between the optimum MAS rate and the fastest rate currently accessible (60 kHz).</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"360 ","pages":"Article 107645"},"PeriodicalIF":2.2,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1090780724000296/pdfft?md5=86b4aa7ef4e5cbee186d80a61dde79b0&pid=1-s2.0-S1090780724000296-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139889235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The CW-EPR Capabilities of a Dual DNP/EPR Spectrometer Operating at 14 and 7 T 在 14 和 7 T 下运行的双 DNP/EPR 光谱仪的 CW-EPR 功能

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-10 DOI: 10.1016/j.jmr.2024.107635

Orit Nir-Arad, David H. Shlomi, Amit Israelstam, Tomer Amit, Nurit Manukovsky, Alexander B. Fialkov, Ilia Kaminker

{"title":"The CW-EPR Capabilities of a Dual DNP/EPR Spectrometer Operating at 14 and 7 T","authors":"Orit Nir-Arad, David H. Shlomi, Amit Israelstam, Tomer Amit, Nurit Manukovsky, Alexander B. Fialkov, Ilia Kaminker","doi":"10.1016/j.jmr.2024.107635","DOIUrl":"https://doi.org/10.1016/j.jmr.2024.107635","url":null,"abstract":"<div><p>High-field electron paramagnetic resonance (EPR) measurements are indispensable for a better understanding of dynamic nuclear polarization (DNP), which relies on polarization transfer between electron and nuclear spins. DNP experiments are typically performed at high > 7 T magnetic fields and low ≤ 100 K temperatures, while EPR instrumentation capable of EPR measurements under these conditions is scarce. In this paper, we describe the CW EPR capabilities of a dual DNP/EPR spectrometer that is designed to carry out EPR experiments under “DNP conditions” at 14 and 7 T. In the first part, we present the design of this instrument, highlighting the choices made to allow for both DNP and EPR operations. The spectrometer uses a sweepable cryogen-free magnet with NMR-grade homogeneity, a closed-cycle cooling system, a quasi-optical induction mode bridge, and a superheterodyne receiver system. The probe design is optimized for low heat load and fast sample exchange under cryogenic conditions. The spectrometer can operate in frequency and field sweep modes, including wide field sweeps using the main coil of the magnet. In the second part, we present EPR spectra acquired over a wide range of samples and operating conditions, illustrating the CW EPR capabilities of the instrument.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"360 ","pages":"Article 107635"},"PeriodicalIF":2.2,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139936186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hyperpolarisation criteria in magnetic resonance 磁共振中的超极化标准。

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-09 DOI: 10.1016/j.jmr.2024.107631

Christian Bengs

{"title":"Hyperpolarisation criteria in magnetic resonance","authors":"Christian Bengs","doi":"10.1016/j.jmr.2024.107631","DOIUrl":"10.1016/j.jmr.2024.107631","url":null,"abstract":"<div><p>Nuclear Magnetic Resonance (NMR) techniques display an inherently low sensitivity due to a small equilibrium magnetisation. Nowadays this issue is easily overcome through the use of hyperpolarisation methods. This however raises the question as to what precisely do we mean by “hyperpolarisation”. Recently a formal definition of hyperpolarisation has been given based on the von Neumann entropy of a system. Ideally this definition should conform with the general usage in the magnetic resonance community, where hyperpolarisation is often used synonymously with “larger” NMR signals. Within this article I show that an entropy-based hyperpolarisation criterion does not always conform with the general usage. Based on this observation I introduce an alternative hyperpolarisation criterion utilising the concept of <em>latent</em> polarisation, where latent polarisation is a measure of the highest possible amount of polarisation that may be extracted from a system. I show that a hyperpolarisation criterion based on latent polarisation correlates more strongly with the general usage within the magnetic resonance community. Ultimately however our results show that there are several possible notions of hyperpolarisation, and the choice depends upon the questions of interest.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"360 ","pages":"Article 107631"},"PeriodicalIF":2.2,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1090780724000156/pdfft?md5=de7d4151aa215dacdd90f6446e68d240&pid=1-s2.0-S1090780724000156-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139713526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing measurements of linear changes of NMR signal parameters 优化核磁共振信号参数线性变化的测量方法

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-06 DOI: 10.1016/j.jmr.2024.107632

Javier Agustin Romero , Krzysztof Kazimierczuk , Paweł Kasprzak

引用次数: 0

Optimization of TROSY- and anti-TROSY-based 15N CPMG relaxation dispersion experiments through phase cycling 通过相循环优化基于 TROSY 和反 TROSY 的 15N CPMG 弛豫弥散实验

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-02 DOI: 10.1016/j.jmr.2024.107629

Yingxian Cui , Yangzhuoyue Jin , Yu Hou , Xiaoxu Han , Haiyan Cao , Lewis E. Kay , Tairan Yuwen

{"title":"Optimization of TROSY- and anti-TROSY-based 15N CPMG relaxation dispersion experiments through phase cycling","authors":"Yingxian Cui , Yangzhuoyue Jin , Yu Hou , Xiaoxu Han , Haiyan Cao , Lewis E. Kay , Tairan Yuwen","doi":"10.1016/j.jmr.2024.107629","DOIUrl":"10.1016/j.jmr.2024.107629","url":null,"abstract":"<div><p>CPMG relaxation dispersion studies of biomolecular dynamics on the μs–ms timescale can provide detailed kinetic, thermodynamic, and structural insights into function. Frequently, the <sup>15</sup>N spin serves as the probe of choice, as uniform incorporation of the <sup>15</sup>N isotope is facile and cost-effective, and the interpretation of the resulting data is often relatively straightforward. In conventional CPMG relaxation dispersion experiments the application of CPMG pulses with constant radiofrequency (RF) phase can lead to artifactual dispersion profiles that result from off-resonance effects, RF field inhomogeneity, and pulse miscalibration. The development of CPMG experiments with the [0013]-phase cycle has significantly reduced the impact of pulse imperfections over a greater bandwidth of frequency offsets in comparison to constant phase experiments. Application of <sup>15</sup>N-TROSY-based CPMG schemes to studies of the dynamics of large molecules is necessary for high sensitivity, yet the correct incorporation of the [0013]-phase cycle is non-trivial. Here we present TROSY- and anti-TROSY-based <sup>15</sup>N CPMG experiments with the [0013]-phase cycling scheme and demonstrate, through comprehensive numerical simulations and experimental validation, enhanced resistance to pulse imperfections relative to traditional schemes utilizing constant phase CPMG pulses. Notably, exchange parameters derived from the new experiments are in good agreement with those obtained using other, more established, <sup>15</sup>N-based CPMG approaches.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"361 ","pages":"Article 107629"},"PeriodicalIF":2.2,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139831675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Volumetric wireless coils for breast MRI: A comparative analysis of metamaterial-inspired coil, Helmholtz coil, ceramic coil, and solenoid 用于乳腺磁共振成像的体积无线线圈：超材料启发线圈、亥姆霍兹线圈、陶瓷线圈和电磁线圈的比较分析。

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-01 DOI: 10.1016/j.jmr.2024.107627

Aigerim Jandaliyeva, Viktor Puchnin, Alena Shchelokova

{"title":"Volumetric wireless coils for breast MRI: A comparative analysis of metamaterial-inspired coil, Helmholtz coil, ceramic coil, and solenoid","authors":"Aigerim Jandaliyeva, Viktor Puchnin, Alena Shchelokova","doi":"10.1016/j.jmr.2024.107627","DOIUrl":"10.1016/j.jmr.2024.107627","url":null,"abstract":"<div><p>This study comprehensively assesses radiofrequency<span> (RF) volumetric wireless coils utilizing artificial materials for clinical breast MRI. In particular, we evaluated the transmit efficiency, RF safety, and homogeneity of magnetic field amplitude distribution for four structures electromagnetically coupled with a whole-body birdcage coil: extremely high permittivity ceramic coil, solenoid coil, Helmholtz coil, and metamaterial-inspired coil based on periodically coupled split-loop resonators. These coils exhibit favorable attributes, including lightweight construction, compactness, cost-effectiveness, and ease of manufacturing. The results of this study demonstrated that the metamaterial-inspired coil outperforms other wireless coils considered for addressing a specific problem in terms of the set of characteristics. In particular, the metamaterial-inspired coil achieved 85% and 88% homogeneity in magnetic field amplitude distribution at 3 T and 1.5 T MRI, respectively. Also, the 1.5 T metamaterial-inspired coil demonstrated the best performance, increasing the efficiency gain of the birdcage coil by 4.93 times and improving RF safety by 2.96 times. This research explains the limitations and peculiarity of utilizing the volumetric wireless coils in 1.5 and 3 T MRI systems.</span></p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"359 ","pages":"Article 107627"},"PeriodicalIF":2.2,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139572397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stationary wavelet denoising of solid-state NMR spectra using multiple similar measurements 利用多个相似测量值对固态核磁共振波谱进行静态小波去噪

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-01 DOI: 10.1016/j.jmr.2023.107615

Peijun Song , Jun Xu , Xinjie Liu , Zhi Zhang , Xinglong Rao , Ricardo P. Martinho , Qingjia Bao , Chaoyang Liu

{"title":"Stationary wavelet denoising of solid-state NMR spectra using multiple similar measurements","authors":"Peijun Song , Jun Xu , Xinjie Liu , Zhi Zhang , Xinglong Rao , Ricardo P. Martinho , Qingjia Bao , Chaoyang Liu","doi":"10.1016/j.jmr.2023.107615","DOIUrl":"10.1016/j.jmr.2023.107615","url":null,"abstract":"<div><p>Accumulating several scans of free induction decays is always needed to improve the signal-to-noise ratio of NMR spectra, especially for the low gyromagnetic ratio solid-state NMR. In this study, we present a new denoising approach based on the correlations between multiple similar NMR spectra. Contrary to the simple averaging of multiple scans or denoising the final averaged spectrum, we propose a Wavelet-based Denoising technique for Multiple Similar scans(WDMS). Firstly, the stationary wavelet transform is applied to decompose every spectrum into approximation coefficients and detail coefficients. Then, the detail coefficients are multiplied by weights calculated based on Pearson's correlation coefficient and structural similarity index between approximation coefficients of different spectra. Finally, the average of these detailed components is used to denoise the spectra. The proposed method is carried on the assumption that noise between multiple spectra is uncorrelated while peak signal information is similar between different spectra, thus preserving the possibility of applying further processing to the data. As a demonstration, the standard wavelet denoise is applied to the WDMS-processed spectra, achieving a further increase in the S/N ratio. We confirm the reliability of the denoising approach based on multiple scans on 1D/2D solid-state MAS/static NMR spectra. In addition, we also show that this method can be used to deal with a single Car-Purcell-Meiboom-Gill (CPMG) echo train.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"359 ","pages":"Article 107615"},"PeriodicalIF":2.2,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139188008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatially encoded pure-shift diffusion-ordered NMR spectroscopy yielded by chirp excitation 啁啾激发产生的空间编码纯漂移扩散有序核磁共振光谱学

IF 2.2 3区化学

Journal of magnetic resonance Pub Date : 2024-02-01 DOI: 10.1016/j.jmr.2024.107628

Rituraj Mishra , Jonathan R.J. Yong , Corentin Jacquemmoz , Benjamin Lorandel , Mohammadali Foroozandeh , Jean-Nicolas Dumez

{"title":"Spatially encoded pure-shift diffusion-ordered NMR spectroscopy yielded by chirp excitation","authors":"Rituraj Mishra , Jonathan R.J. Yong , Corentin Jacquemmoz , Benjamin Lorandel , Mohammadali Foroozandeh , Jean-Nicolas Dumez","doi":"10.1016/j.jmr.2024.107628","DOIUrl":"10.1016/j.jmr.2024.107628","url":null,"abstract":"<div><p>Spatially-encoded diffusion-ordered NMR spectroscopy (SPEN-DOSY) has emerged as a new time-efficient tool for the analysis of mixtures of small molecules in solution. Time efficiency is achieved using the concept of spatial parallelization of the effective gradient area, instead of the sequential incrementation used in conventional diffusion experiments. The data acquired with such sequences are then usually processed to extract diffusion coefficients, but cases when peak overlap in the <sup>1</sup>H spectrum are difficult to address. Such limitation in conventional diffusion experiments is addressed via using the Pure Shift Yielded by CHirp Excitation (PSYCHE)-iDOSY sequence. Here we have adapted the PSYCHE-iDOSY sequence by using echo planar spectroscopic imaging (EPSI) to acquire SPEN-DOSY data. The pure shift mode of PSYCHE separates the overlapped components and a modified Stejskal-Tanner equation is used to extract the corresponding diffusion coefficient. The primary results obtained with the above-mentioned mixtures seem to open the possibility of separating complex mixtures in less time than PSYCHE-iDOSY.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"359 ","pages":"Article 107628"},"PeriodicalIF":2.2,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1090780724000120/pdfft?md5=482060ac276eaf3b7691b4d8bc601108&pid=1-s2.0-S1090780724000120-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139638953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0