Publication result detail

Testing the quality of magnetic gradient fields for studying self-diffusion processes in biological specimens by magnetic resonance methods

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

Original Title

Testing the quality of magnetic gradient fields for studying self-diffusion processes in biological specimens by magnetic resonance methods

English Title

Testing the quality of magnetic gradient fields for studying self-diffusion processes in biological specimens by magnetic resonance methods

Type

Paper in proceedings (conference paper)

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.

English 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, diffusion

Key words in English

MR, NMR, diffusion

Authors

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

Released

01.12.2006

Publisher

IEEE

Location

Singapore

ISBN

1-4244-0387-1

Book

APCCAS06 proceeding

Pages from

1

Pages count

4

URL

http://www.apccas.org

BibTex

@inproceedings{BUT21631,
  author="Radek {Kubásek} and Eva {Gescheidtová} and Karel {Bartušek}",
  title="Testing the quality of magnetic gradient fields for studying self-diffusion processes in biological specimens by magnetic resonance methods",
  booktitle="APCCAS06 proceeding",
  year="2006",
  pages="4",
  publisher="IEEE",
  address="Singapore",
  isbn="1-4244-0387-1",
  url="http://www.apccas.org"
}