Přístupnostní navigace
E-application
Search Search Close
Publication detail
KUBÁSEK, R. GESCHEIDTOVÁ, E. BARTUŠEK, K.
Original Title
Quality of gradient magnetic fields estimation
Type
journal article - other
Language
English
Original Abstract
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.
Keywords
MR, NMR, Gradient magnetic field mesurement
Authors
KUBÁSEK, R.; GESCHEIDTOVÁ, E.; BARTUŠEK, K.
RIV year
2006
Released
20. 12. 2006
ISBN
1335-3632
Periodical
Journal of Electrical Engineering
Year of study
Number
8/S
State
Slovak Republic
Pages from
54
Pages to
57
Pages count
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" }