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  • Znalost přesných hodnot gradientů magnetického pole je důležitá při NMR měření difúzních koeficientů. Ty jsou měřeny pomocí zpoždění mezi MR signálem bez a s přítomností gradientního pulsu. Proto je tvar gradientního pulsu základním předpokladem přesnosti měření difúzních koeficientů. Jsou požadovány krátké náběžné doby, vysoká amplituda gradientů a shodná amplituda obou polarit pulsů. (cs)
  • Accurate knowledge of a gradient magnetic field waveform is important for the measurement of diffusion coefficients in NMR. Diffusion coefficients are determined from the decay between an MR signal affected and an MR signal not affected by gradient pulses. Therefore the waveform of the gradients is essential from the point of view of accuracy. Short ramp times, amplitude of generated gradients and symmetry of positive and negative levels (i.e. an integral of two pulses with the same amplitude and inveerse polarity is zero) are desirable.
  • Accurate knowledge of a gradient magnetic field waveform is important for the measurement of diffusion coefficients in NMR. Diffusion coefficients are determined from the decay between an MR signal affected and an MR signal not affected by gradient pulses. Therefore the waveform of the gradients is essential from the point of view of accuracy. Short ramp times, amplitude of generated gradients and symmetry of positive and negative levels (i.e. an integral of two pulses with the same amplitude and inveerse polarity is zero) are desirable. (en)
Title
  • An NMR technique for measurement of gradient magnetic field
  • NMR technika měření gradientů magnetického pole (cs)
  • An NMR technique for measurement of gradient magnetic field (en)
skos:prefLabel
  • An NMR technique for measurement of gradient magnetic field
  • NMR technika měření gradientů magnetického pole (cs)
  • An NMR technique for measurement of gradient magnetic field (en)
skos:notation
  • RIV/00216305:26220/05:PU49849!RIV06-MSM-26220___
http://linked.open.../vavai/riv/strany
  • 111-113
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  • Z(MSM0021630516)
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  • 511963
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  • RIV/00216305:26220/05:PU49849
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  • gradient magnetic field, diffusion coefficients, NMR (en)
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  • [DF3D30895B1C]
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  • Gliwice- Ustron
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  • Gliwice, Polsko
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  • 28th International Conference SPETO 2005
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  • Bartušek, Karel
  • Smutný, Tomáš
  • Kafka, Vítězslav
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http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
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  • Silesian University of Technology
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  • 83-85940-27-8
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  • 26220
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