Contribution of the multi-echo approach in accelerated
functional magnetic resonance imaging multiband acquisition

J 2022

Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition

KOVÁŘOVÁ, Anežka, Martin GAJDOŠ, Ivan REKTOR and Michal MIKL

Basic information

Original name

Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition

Authors

KOVÁŘOVÁ, Anežka (203 Czech Republic, belonging to the institution), Martin GAJDOŠ (203 Czech Republic, belonging to the institution), Ivan REKTOR (203 Czech Republic, belonging to the institution) and Michal MIKL (203 Czech Republic, guarantor, belonging to the institution)

Edition

Human Brain mapping, USA, WILEY, 2022, 1065-9471

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30103 Neurosciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 4.800

RIV identification code

RIV/00216224:14740/22:00125432

Organization unit

Central European Institute of Technology

DOI

http://dx.doi.org/10.1002/hbm.25698

UT WoS

000712875500001

Keywords in English

acquisition acceleration; BOLD; multi-echo fMRI; simultaneous multi-slice imaging; TE dependence

Abstract

V originále

We wanted to verify the effect of combining multi-echo (ME) functional magnetic resonance imaging (fMRI) with slice acceleration in simultaneous multi-slice acquisition. The aim was to shed light on the benefits of multiple echoes for various acquisition settings, especially for levels of slice acceleration and flip angle. Whole-brain ME fMRI data were obtained from 26 healthy volunteers (using three echoes; seven runs with slice acceleration 1, 4, 6, and 8; and two different flip angles for each of the first three acceleration factors) and processed as single-echo (SE) data and ME data based on optimal combinations weighted by the contrast-to-noise ratio. Global metrics (temporal signal-to-noise ratio, signal-to-noise separation, number of active voxels, etc.) and local characteristics in regions of interest were used to evaluate SE and ME data. ME results outperformed SE results in all runs; the differences became more apparent for higher acceleration, where a significant decrease in data quality is observed. ME fMRI can improve the observed data quality metrics over SE fMRI for a wide range of accelerated fMRI acquisitions.

Links

EF16_013/0001775, research and development project

Name: Modernizace a podpora výzkumných aktivit národní infrastruktury pro biologické a medicínské zobrazování Czech-BioImaging

LM2015062, research and development project

Name: Národní infrastruktura pro biologické a medicínské zobrazování

Investor: Ministry of Education, Youth and Sports of the CR

LM2018129, research and development project

Name: Národní infrastruktura pro biologické a medicínské zobrazování Czech-BioImaging

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

KOVÁŘOVÁ, Anežka, Martin GAJDOŠ, Ivan REKTOR and Michal MIKL. Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition. Human Brain mapping. USA: WILEY, 2022, vol. 43, No 3, p. 955-973. ISSN 1065-9471. Available from: https://dx.doi.org/10.1002/hbm.25698.

@article{1836843,
   author = {Kovářová, Anežka and Gajdoš, Martin and Rektor, Ivan and Mikl, Michal},
   article_location = {USA},
   article_number = {3},
   doi = {http://dx.doi.org/10.1002/hbm.25698},
   keywords = {acquisition acceleration; BOLD; multi-echo fMRI; simultaneous multi-slice imaging; TE dependence},
   language = {eng},
   issn = {1065-9471},
   journal = {Human Brain mapping},
   title = {Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition},
   url = {https://onlinelibrary.wiley.com/doi/10.1002/hbm.25698},
   volume = {43},
   year = {2022}
}

TY  - JOUR
ID  - 1836843
AU  - Kovářová, Anežka - Gajdoš, Martin - Rektor, Ivan - Mikl, Michal
PY  - 2022
TI  - Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition
JF  - Human Brain mapping
VL  - 43
IS  - 3
SP  - 955-973
EP  - 955-973
PB  - WILEY
SN  - 10659471
KW  - acquisition acceleration
KW  - BOLD
KW  - multi-echo fMRI
KW  - simultaneous multi-slice imaging
KW  - TE dependence
UR  - https://onlinelibrary.wiley.com/doi/10.1002/hbm.25698
N2  - We wanted to verify the effect of combining multi-echo (ME) functional magnetic resonance imaging (fMRI) with slice acceleration in simultaneous multi-slice acquisition. The aim was to shed light on the benefits of multiple echoes for various acquisition settings, especially for levels of slice acceleration and flip angle. Whole-brain ME fMRI data were obtained from 26 healthy volunteers (using three echoes; seven runs with slice acceleration 1, 4, 6, and 8; and two different flip angles for each of the first three acceleration factors) and processed as single-echo (SE) data and ME data based on optimal combinations weighted by the contrast-to-noise ratio. Global metrics (temporal signal-to-noise ratio, signal-to-noise separation, number of active voxels, etc.) and local characteristics in regions of interest were used to evaluate SE and ME data. ME results outperformed SE results in all runs; the differences became more apparent for higher acceleration, where a significant decrease in data quality is observed. ME fMRI can improve the observed data quality metrics over SE fMRI for a wide range of accelerated fMRI acquisitions.
ER  -

KOVÁŘOVÁ, Anežka, Martin GAJDOŠ, Ivan REKTOR and Michal MIKL. Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition. \textit{Human Brain mapping}. USA: WILEY, 2022, vol.~43, No~3, p.~955-973. ISSN~1065-9471. Available from: https://dx.doi.org/10.1002/hbm.25698.

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