Detail publikačního výsledku

Quality of gradient magnetic fields estimation

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

Originální název

Quality of gradient magnetic fields estimation

Anglický název

Quality of gradient magnetic fields estimation

Druh

Článek recenzovaný mimo WoS a Scopus

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.

Anglický 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

Klíčová slova v angličtině

MR, NMR, Gradient magnetic field mesurement

Autoři

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

Vydáno

20.12.2006

ISSN

1335-3632

Periodikum

Journal of Electrical Engineering-Elektrotechnicky Casopis

Svazek

2006

Číslo

8/S

Stát

Slovenská republika

Strany od

54

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-Elektrotechnicky Casopis",
  year="2006",
  volume="2006",
  number="8/S",
  pages="4",
  issn="1335-3632"
}