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R 1 dispersion contrast at high field with fast field-cycling MRI [PDF]
Journal of Magnetic Resonance, 2018 Contrast agents with a strong $R_1$ dispersion have been shown to be effective in generating target-specific contrast in MRI. The utilization of this $R_1$ field dependence requires the adaptation of a MRI scanner for fast field-cycling (FFC). Here, we present the first implementation and validation of FFC-MRI at a clinical field strength of 3 T.
Markus Bödenler +2 more
exaly +9 more sources
Application of CPMG acquisition in Fast-Field-Cycling relaxometry
Microporous and Mesoporous Materials, 2018 Abstract The possibility and limits for applying the CPMG sequence during the acquisition period of Fast-Field-Cycling relaxometry measurements were investigated. Fluctuations of the acquisition field strength were quantified and related to the signal phase fluctuations they cause in CPMG measurements.
Carlos Mattea, Siegfried Stapf
exaly +6 more sources
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Fast field-cycling magnetic resonance imaging
Comptes Rendus Physique, 2010Magnetic resonance imaging (MRI) and fast field-cycling (FFC) NMR are both well-developed methods. The combination of these techniques, namely fast field-cycling magnetic resonance imaging (FFC-MRI) is much less well-known. Nevertheless, FFC-MRI has a number of significant applications and advantages over conventional techniques, and is being pursued ...
David John Lurie +2 more
exaly +2 more sources
Microcontroller of the power supply of a fast field cycling relaxometer
2018 IEEE International Conference on Industrial Technology (ICIT), 2018This paper describes aspects of the implementation of a digital control system to be used in a Fast Field Cycling (FFC) Nuclear Magnetic Resonance relaxometer (NMR). This technique is very demanding from the point of view of experimental equipment requiring a modulation of the magnetic flux density, and that, the magnetic flux density cycles between ...
Ruben J. A. Lopes +3 more
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Desktop fast-field cycling nuclear magnetic resonance relaxometer
Solid State Nuclear Magnetic Resonance, 2010In this paper a new type of Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) relaxometer with low power consumption (200W) and cycle to cycle field stability better than 10(-4) is described. The new high-permeability magnet was designed to allow for good magnetic field homogeneity and allows for the sample rotation around an axis perpendicular
Gil D Marques, Pedro J Sebastião
exaly +3 more sources
A fast field-cycling NMR/NQR spectrometer
Measurement Science and Technology, 1993The authors describe a fast field-cycling NMR/NQR spectrometer with a switching time of only 0.7 ms between zero field and maximum field (1 T) which uses a novel air-cored magnet design in which the magnet is cut out of a solid copper tube by means of electric spark erosion.
M Blanz, T J Rayner, J A S Smith
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Fast-field-cycling NMR: Applications and instrumentation
Applied Magnetic Resonance, 2001Magnetic field cycling in nuclear magnetic resonance (NMR) experiments has been used since the early days of NMR. Originally such time-dependent magnetic field experiments were motivated to study cross relaxation, spin system thermodynamics and indirect detection of quadrupolar resonance.
E. Anoardo, G. Galli, G. Ferrante
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TECHNICAL ASPECTS OF FAST FIELD CYCLING
2005Publisher Summary Since the earliest days of Nuclear Magnetic Resonance (NMR), it has been clear that relaxation mechanisms were to play an important role in all its applications. The advent of the Fast Field Cycling (FFC) instruments has opened a number of important application areas (molecular dynamics of liquid crystals, paramagnetic contrast MRI ...
GIANNI FERRANTE, STANISLAV SYKORA
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