Detail publikace

Checking the quality of gradient magnetic fields in MR tomography

BARTUŠEK, K., GESCHEIDTOVÁ, E., KUBÁSEK, R.

Originální název

Checking the quality of gradient magnetic fields in MR tomography

Typ

článek ve sborníku ve WoS nebo Scopus

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 behavior 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, magnetic field quality estimation

Autoři

BARTUŠEK, K., GESCHEIDTOVÁ, E., KUBÁSEK, R.

Rok RIV

2006

Vydáno

14. 9. 2006

Nakladatel

VUT Brno

Místo

Brno

ISBN

80-214-3246

Kniha

Electronic Devices and Systems

Strany od

189

Strany do

194

Strany počet

5

BibTex

@inproceedings{BUT19163,
  author="Karel {Bartušek} and Eva {Gescheidtová} and Radek {Kubásek}",
  title="Checking the quality of gradient magnetic fields in MR tomography",
  booktitle="Electronic Devices and Systems",
  year="2006",
  pages="189--194",
  publisher="VUT Brno",
  address="Brno",
  isbn="80-214-3246"
}