Detail publikace

Correction of gradient pulse shape distortions in radial MRI

VITOUŠ, J.

Originální název

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This paper focuses on the optimization of gradient-pulse shapes in MRI measurement. The main topic investigated in this paper is optimization of slice-selective gradient, where imperfections may produce phase distortion in the resulting image and also signal loss in the acquired signal. A method for correction is proposed based on the Nelder-Mead algorithm followed by coordinate ascent search in the neighborhood of the found solution. The adjustment is evaluated using a simple Fast low angle shot (FLASH) sequence with radial readout. The results show a significant improvement in the Free induction decay (FID) signal magnitude, echo stability, and an improvement in the homogeneity of image phase.

Klíčová slova

MRI, gradient, Nelder-Mead, slice, adjustment

Autoři

VITOUŠ, J.

Vydáno

26. 4. 2022

Nakladatel

Brno University of Technology, Faculty of Electrical Engineering and Communication

Místo

Brno

ISBN

978-80-214-6030-0

Kniha

Proceedings II of the 28 th Conference STUDENT EEICT 2022 Selected Papers

Edice

Strany od

264

Strany do

268

Strany počet

URL

https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2022_sbornik_2.pdf

BibTex

@inproceedings{BUT177792,
  author="Jiří {Vitouš}",
  title="Correction of gradient pulse shape distortions in radial MRI",
  booktitle="Proceedings II of the 28 th Conference STUDENT EEICT 2022 Selected Papers",
  year="2022",
  series="1",
  pages="264--268",
  publisher="Brno University of Technology, Faculty of Electrical Engineering and Communication",
  address="Brno",
  isbn="978-80-214-6030-0",
  url="https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2022_sbornik_2.pdf"
}

Odpovědnost: Ing. Marek Strakoš