Results 11 to 20 of about 2,001,078 (317)

Lowering the thermal noise barrier in functional brain mapping with magnetic resonance imaging

Nature Communications, 2021
The signal-to-noise ratio is a key consideration when selecting a magnetic resonance imaging protocol. Thermal noise is major issue, especially in high resolution functional images.
Luca Vizioli, Steen Moeller, Logan Dowdle, Mehmet Akçakaya, Federico De Martino, Essa Yacoub, Kamil Uğurbil   +6 more
doaj   +1 more source

Cardiovascular magnetic resonance activity in the United Kingdom: a survey on behalf of the british society of cardiovascular magnetic resonance [PDF]

, 2011
<p>Background: The indications, complexity and capabilities of cardiovascular magnetic resonance (CMR) have rapidly expanded. Whether actual service provision and training have developed in parallel is unknown.</p> <p>Methods: We ...
J. Moon (6723125), Pennell, D.J., S. Neubauer (1410220), Payne, J., Neubauer, Stefan, J. Payne (2409088), Antony Renjith, Dargie, HJ, G. P. McCann (7591697), Antony, R, Hawkins, N.M., Payne John, C. Berry (7606274), Dargie, H.J., Renjith Antony, Nathaniel M Hawkins, Henry J Dargie, James Moon, Petrie Mark C, S. Daghem (7606259), Gerry P. McCann (7241615), Moon, J., Daghem, M., Pennell, DJ, Pennell Dudley J, Mark C Petrie, H. J. Dargie (7606265), Neubauer Stefan, Marwa Daghem, Antony, R., Gerry P McCann, R. Antony (7606253), McCann, GP, M. Daghem (7606256), Petrie, M.C., Moon James, Hawkins, NM, Safa Daghem, Daghem Marwa, Berry Colin, Colin Berry, D. J. Pennell (7606268), Dargie Henry J, McCann, G.P., Daghem, S, Payne, J, Neubauer, S., Hawkins Nathaniel M, Daghem, M, Daghem, S., Petrie, MC, McCann Gerry P, N. M. Hawkins (7606271), Moon, J, Dudley J Pennell, Berry, C, Berry, C., Neubauer, S, John Payne, M. C. Petrie (7606262), Daghem Safa, Stefan Neubauer   +61 more
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Resonances of rectangular resonators [PDF]

The Journal of the Acoustical Society of America, 1981
We have used variational methods based on the work of Holland and Eernisse to predict the resonant frequencies of rectangular resonators for use in acoustic transducer arrays. We have predicted both the open and short circuited resonances and have compared the theoretical results obtained with a large number of experiments carried out on such ...
P. A. Bennett, G. S. Kino
openaire   +1 more source

Nucleon resonances in the fourth-resonance region [PDF]

The European Physical Journal A, 2011
Nucleon and $Δ$ resonances in the fourth resonance region are studied in a multichannel partial-wave analysis which includes nearly all available data on pion- and photo-induced reactions off protons. In the high-mass range, above 1850\,MeV, several alternative solutions yield a good description of the data.
Anisovich, A. V., Klempt, E., Nikonov, V. A., Sarantsev, A. V., Thoma, U.   +4 more
openaire   +2 more sources

Correction to: Diagnostic performance of semi-quantitative and quantitative stress CMR perfusion analysis: a meta-analysis

Journal of Cardiovascular Magnetic Resonance, 2018
In the original publication of this article there was an error in Figures 8, 9, 10 and 11. During typesetting the Figures 8, 9, 10 and 11 have been incorrectly swapped.
Journal of Cardiovascular Magnetic Resonance
doaj   +1 more source

Plaque Characteristics in Young Adults With Symptomatic Intracranial Atherosclerotic Stenosis: A Preliminary Study

Frontiers in Neurology, 2022
PurposeTo determine how intracranial vascular wall and atherosclerosis plaque characteristics differ between young and old adults with sICAS.MethodsEighty-four consecutive patients with sICAS who underwent high-resolution magnetic resonance imaging ...
Ling Li, Min Tang, Xuejiao Yan, Jie Gao, Niane Ma, Xiaorui Shi, Yaxin Niu, Yu Wen, Kai Ai, Xiaoyan Lei, Xiaoling Zhang   +10 more
doaj   +1 more source

Stochastic resonance in electrical circuits—I: Conventional stochastic resonance. [PDF]

, 1999
Stochastic resonance (SR), a phenomenon in which a periodic signal in a nonlinear system can be amplified by added noise, is introduced and discussed. Techniques for investigating SR using electronic circuits are described in practical terms.
Luchinsky, D. G., MANNELLA, RICCARDO, McClintock PVE, Stocks NG, Mannella, R., McClintock, Peter V. E., Luchinsky DG, Stocks, N. G.   +7 more
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Off-resonance magnetisation transfer contrast (MTC) MRI using fast field-cycling (FFC) [PDF]

, 2010
Peer ...
Lurie, David J, Choi, Chang-Hoon, Davies, Gareth R   +2 more
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Stochastic resonance in electrical circuits—II: Nonconventional stochastic resonance. [PDF]

, 1999
Stochastic resonance (SR), in which a periodic signal in a nonlinear system can be amplified by added noise, is discussed. The application of circuit modeling techniques to the conventional form of SR, which occurs in static bistable potentials, was ...
Luchinsky, D. G., MANNELLA, RICCARDO, McClintock PVE, Stocks NG, Mannella, R., McClintock, Peter V. E., Luchinsky DG, Stocks, N. G.   +7 more
core   +1 more source

Comparative cost-effectiveness analyses of cardiovascular magnetic resonance and coronary angiography combined with fractional flow reserve for the diagnosis of coronary artery disease. [PDF]

, 2014
According to recent guidelines, patients with coronary artery disease (CAD) should undergo revascularization if significant myocardial ischemia is present.
Pilz, G., Steffen E Petersen, Pilz, G, Petersen, SE, Wasserfallen, J-B, Guenter Pilz, Petersen, S.E., Favre, David, Petersen, Steffen E., Anja Wagner, Schwitter, J.J., Pinget, C, Favre, D., Wagner, A, Wagner, A., Jean-Blaise Wasserfallen, Karine Moschetti, Moschetti, K., Moschetti, Karine, Wasserfallen, JB, Schwitter, J, Schwitter, Juerg, Wasserfallen, Jean-Blaise, David Favre, Schwitter, JJ, Christophe Pinget, Pinget, Christophe, Wasserfallen, J.B., Pilz, Guenter, Pinget, C., Wagner, Anja, Juerg J Schwitter, Moschetti, K, Favre, D   +33 more
core   +1 more source