Results 221 to 230 of about 20,208 (255)

Multisliced ultrafast 2D relaxometry

Magnetic Resonance Imaging, 2010
By associating each slice in a spatially homogeneous sample with a different inversion-recovery delay time, multislice methods are used to reduce the acquisition times of 2D inversion-recovery T(1)-T(2) relaxation spectra to just a few minutes. The increased speed comes at the expense of reduced signal/noise and this is reflected most noticeably in ...
Luca, Venturi, Joshua, Warner, Brian, Hills   +2 more
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Field-cycling NMR relaxometry

Progress in Nuclear Magnetic Resonance Spectroscopy, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Rainer Kimmich, Esteban Anoardo
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Relaxometry and magnetometry of ferritin

Magnetic Resonance in Medicine, 1998
AbstractBy combining nuclear magnetic relaxometry on 39 ferritin samples with different iron loading with magnetometry, results were obtained that suggest a new interpretation of the core structure and magnetic properties of ferritin. These studies provide evidence that, contrary to most earlier reports, the ferritin core is antiferromagnetic (AFM ...
R A, Brooks, J, Vymazal, R B, Goldfarb, J W, Bulte, P, Aisen   +4 more
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Triple echo steady‐state (TESS) relaxometry

Magnetic Resonance in Medicine, 2013
PurposeRapid imaging techniques have attracted increased interest for relaxometry, but none are perfect: they are prone to static (B0) and transmit (B1) field heterogeneities, and commonly biased by T2/T1. The purpose of this study is the development of a rapid T1 and T2 relaxometry method that is completely (T2) or partly (T1) bias‐free.MethodsA new ...
Heule Rahel, Ganter Carl, Bieri Oliver
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Relaxometry and Contrast Agents

2018
The perturbation on the relaxation of solvent water protons induced by the presence of paramagnetic metal-containing systems has been exploited for the design of contrast agents in magnetic resonance imaging applications. Complexes of Gd3+ ions were identified early as the candidates of choice and several, highly stable, Gd-containing contrast agents ...
Aime S, Gianolio E, Viale A
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Muskelrelaxanzien und Relaxometrie

2017
Seit ihrer Einfuhrung in die klinische Praxis in den 1940er Jahren haben Muskelrelaxanzien einen festen Platz im Rahmen sog. balancierter Anasthesiekonzepte. Durch die pharmakologische Muskelerschlaffung werden chirurgische Eingriffe wesentlich erleichtert oder erst moglich gemacht.
Jan-Uwe Schreiber, Thomas Fuchs-Buder
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NMR Relaxometry: The Canonical Case Glycerol

The Journal of Physical Chemistry B, 2020
We present a quantitative description of the proton spin-lattice relaxation rate R1(T,ω) of glycerol including temperatures from 191 to 360 K and a frequency range 10 kHz < ω/2π < 20 MHz covered by the field-cycling technique. The analysis encompasses the data compiled by Noack and co-workers in 1971, so far, the most complete data set (10 kHz > ω/2π <
M. Flämig, M. Hofmann, N. Fatkullin, E. A. Rössler   +3 more
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Relaxometry of Tissue

2007
The sections in this article are 1 Introduction 2 Proton 1/T1 NMRD Profiles of Tissue and Model Systems 3 Proton and Deuteron NMRD Profiles in Model Systems with Deuterated Solvent 4 Theory 5 Data and Theory 6 Cytoplasmic Ordering and Cytoplasmic Chaos 7 Perspectives 8 Biographical Sketches Related ...
Seymour H. Koenig, Rodney D. Brown
openaire   +1 more source

Quantitative Two‐Dimensional time Correlation Relaxometry

Magnetic Resonance in Medicine, 1991
AbstractAn experimental and analytical method is presented for obtaining two‐dimensional NMR time correlation spectra of T1 and (T2 and T2) exponential relaxation in heterogeneous samples. The numerical algorithms used in this study do not bias the solution by any a priori assumptions as to the number of required components.
A E, English, K P, Whittall, M L, Joy, R M, Henkelman   +3 more
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Transverse relaxometry with stimulated echo compensation

Magnetic Resonance in Medicine, 2010
AbstractPresented is a fitting model for transverse relaxometry data acquired with the multiple‐refocused spin‐echo sequence. The proposed model, requiring no additional data input or pulse sequence modifications, compensates for imperfections in the transmit field and radiofrequency (RF) profiles.
R Marc, Lebel, Alan H, Wilman
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