PatentDOI
Adiabatic pulses for wideband inversion and broadband decoupling
TLDR
In this article, an inversion pulse for wideband application is obtained from a simple nonlinear amplitude modulation wherein the amplitude is modulated in accord with A(t)=A 0 {1-| sin βt| n } and the entire pulse is frequency modulated such that the phase varies as φ(t) =φ 0 + 1/2 kt 2About:
This article is published in Journal of Magnetic Resonance, Series A.The article was published on 1996-07-26. It has received 538 citations till now. The article focuses on the topics: Amplitude modulation & Amplitude.read more
Citations
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Journal ArticleDOI
Measurement of carbonyl chemical shifts of excited protein states by relaxation dispersion NMR spectroscopy: comparison between uniformly and selectively (13)C labeled samples.
TL;DR: Very similar 13CO chemical shifts are obtained from analysis of CPMG experiments recorded on both samples, and comparison with chemical shifts measured using a second approach establishes that the shifts measured from relaxation dispersion are very accurate.
Journal ArticleDOI
Sodium inversion recovery MRI of the knee joint in vivo at 7T.
TL;DR: The feasibility of a fluid-suppressed 3D ultrashort TE radial sodium sequence is demonstrated by implementing an inversion recovery (IR) preparation of the magnetization at 7T and it is shown that adiabatic pulses offer significantly improved performance in terms of robustness to B⁁ and B₀ inhomogeneities when compared to the hard pulse sequence.
Journal ArticleDOI
Quantitative ATP synthesis in human liver measured by localized 31P spectroscopy using the magnetization transfer experiment.
Albrecht Ingo Schmid,Marek Chmelik,Julia Szendroedi,Martin Krššák,Attila Brehm,Ewald Moser,Michael Roden +6 more
TL;DR: 31P MRS at 3 T provides sufficient sensitivity to detect magnetization transfer effects and can therefore be used to assess ATP synthesis in human liver.
Journal ArticleDOI
Machine Learning Topological Phases with a Solid-State Quantum Simulator.
W.-Q. Lian,Sheng-Tao Wang,Sheng-Tao Wang,Sirui Lu,Yuanyuan Huang,F. Wang,Xinxing Yuan,Wengang Zhang,Xiaolong Ouyang,Xin Wang,Xianzhi Huang,L. He,X.-Y. Chang,Dong-Ling Deng,Luming Duan +14 more
TL;DR: In this article, a convolutional neural network (CNN) was trained to identify different topological phases protected by chiral symmetry from experimental raw data generated with a solid-state quantum simulator.
Journal ArticleDOI
13C NMR spectroscopic and X-ray crystallographic study of the role played by mitochondrial cytochrome b5 heme propionates in the electrostatic binding to cytochrome c.
María J. Rodríguez-Marañón,Feng Qiu,Ruth E. Stark,Steven P. White,Xuejun C. Zhang,Stephen I. Foundling,Verónica Rodríguez,Curtis L. Iii Schilling,Richard A. Bunce,Mario Rivera +9 more
TL;DR: The large body of information gathered by many investigators for the nonphysiological interaction between microsomal Cytochrome b5 and cytochrome c has indeed biological as well as pedagogical validity, and the stability of this complex is similar to that measured for the association betweenmicrosomal cyto Chrome c and cy tochrome c is concluded.
References
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PatentDOI
Methods of, and apparatus for, proton decoupling in nuclear magnetic resonance spectroscopy
TL;DR: In this paper, a radio-frequency pulse is tuned to the frequency of the nuclear species, such as 1 H, to be decoupled or saturated and has a bandwidth adjusted to correspond to the entire chemical shift spectrum, minimizing the amount of radiofrequency power transmitted into a volume of the irradiated sample.
Patent
RF pulse cascade for the generation of NMR spectra
TL;DR: In this article, a method for generating a spectrum of NMR signals with rectangular characteristic in the frequency space by radiating a sequence of RF pulses onto a sample in the homogeneous magnetic field is presented.
PatentDOI
Method and apparatus for broadband decoupling in nuclear magnetic resonance with chirp pulses
Riqiang Fu,Geoffrey Bodenhausen +1 more
TL;DR: In this article, the authors proposed a method for broadband decoupling in nuclear magnetic resonance with chirp and other RF pulses, where the sample is placed in a static field, and a first cycle of chirps pulses are generated, followed by a second cycle of pulses generated by a supercycle of the first and second cycles.
Patent
Method for exciting transverse magnetization in magnetic resonance
TL;DR: In this article, a method for exciting transverse magnetization by irradiating a nuclear spin system subjected to a constant magnetic field with a frequency-modulated rf-pulse ("chirp"-pulse) and with a further frequency-modified rfpulse (further chirppulse), for refocusing the magnetization, is characterized in that the rf pulse-(P1) and the further pulse (P2) overlap each other in time at least partially.
PatentDOI
Method for determining optimized radio-frequency pulse shapes for selective excitation in magnetic resonance spectroscopy and imaging
TL;DR: In this paper, a spin system with a frequency-selective radio-frequency (RF) pulse was used for magnetic resonance spectroscopy and imaging, and the shape of the pulse was optimized.
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