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KUBÁSEK, R. GESCHEIDTOVÁ, E. BARTUŠEK, K.
Originální název
Quality of gradient magnetic fields estimation
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
Imaging techniques based on the principle of nuclear magnetic resonance (MRI) can be used in the study of molecular transport phenomena in biological systems such as self-diffusion processes. The precision of determining the diffusion constants depends on generating the gradient pulse with high precision. For the purpose of determining the characteristics of time behaviour of gradient pulses a simple measuring method was developed and experimentally tested on a 4.7 T tomograph. The method is based on the principle of measuring the instantaneous frequency of MR signal in the presence of gradient pulse after the excitation of a thin defined layer of the examined specimen placed outside the gradient field centre. Using the above method, errors were found in the amplitude and time integral of generated gradient fields and in determining the diffusion constants for biological tissues.
Klíčová slova
MR, NMR, Gradient magnetic field mesurement
Autoři
KUBÁSEK, R.; GESCHEIDTOVÁ, E.; BARTUŠEK, K.
Rok RIV
2006
Vydáno
20. 12. 2006
ISSN
1335-3632
Periodikum
Journal of Electrical Engineering
Ročník
Číslo
8/S
Stát
Slovenská republika
Strany od
54
Strany do
57
Strany počet
4
BibTex
@article{BUT43663, author="Radek {Kubásek} and Eva {Gescheidtová} and Karel {Bartušek}", title="Quality of gradient magnetic fields estimation", journal="Journal of Electrical Engineering ", year="2006", volume="2006", number="8/S", pages="4", issn="1335-3632" }