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Generátor šumu s DSP96002
Gescheidtová, E. ; Bartušek, Karel ; Dokoupil, Zdeněk
In the paper, the design and software implementation are described of a generator of pseudorandom binary noise signal of adjustable length and with repetition of pseudorandom binary signal sequence. The parameters of noise outputs are stable, well defined and variable over a wide range.
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Vliv magnetické susceptibility na T1 relaxace 129Xe.
Bartušek, Karel ; Rychnovský, Jan
Every substance has its own susceptibility, which can affect homogenous magnetic field in magnetic resonance measuring. Local homogenous magnetic field deformation reduces T1 and T2 relaxation times of measured materials. By the laboratory glasses magnetic susceptibilities measurement, we obtained theirs walls influence to thermally polarized 129Xe T1 relaxation times.
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Fenomén nehomogenity materiálu v NMR
Fiala, P. ; Kroutilová, E. ; Steinbauer, M. ; Dohnal, P. ; Bartušek, Karel
This article deals with the verification of experimental results obtained by numerical simulation. We solved the effect of changes in the homogeneity of magnetic fields evoked by different samples from conductive and/or magnetic materials and the different types of inhomogeneity in the MR tomograph. Moreover, the paper will describe the suitable magnetic resonance techniques.
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