Whole brain, high resolution multiband spin-echo EPI fMRI at 7 T: a comparison with gradient-echo EPI using a color-word Stroop task

Boyacioğlu, Rasim, Schulz, Jenni, Müller, Nils C. J., Koopmans, Peter J., Barth, Markus and Norris, David G. (2014) Whole brain, high resolution multiband spin-echo EPI fMRI at 7 T: a comparison with gradient-echo EPI using a color-word Stroop task. NeuroImage, 97 142-150. doi:10.1016/j.neuroimage.2014.04.011

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ332225_postprint.pdf Full text (open access) application/pdf 184.53KB 0

Author Boyacioğlu, Rasim
Schulz, Jenni
Müller, Nils C. J.
Koopmans, Peter J.
Barth, Markus
Norris, David G.
Title Whole brain, high resolution multiband spin-echo EPI fMRI at 7 T: a comparison with gradient-echo EPI using a color-word Stroop task
Journal name NeuroImage   Check publisher's open access policy
ISSN 1053-8119
1095-9572
Publication date 2014-08-15
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2014.04.011
Open Access Status File (Author Post-print)
Volume 97
Start page 142
End page 150
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract A whole brain, multiband spin-echo (SE) echo planar imaging (EPI) sequence employing a high spatial (1.5. mm isotropic) and temporal (TR of 2. s) resolution was implemented at 7. T. Its overall performance (tSNR, sensitivity and CNR) was assessed and compared to a geometrically matched gradient-echo (GE) EPI multiband sequence (TR of 1.4. s) using a color-word Stroop task. PINS RF pulses were used for refocusing to reduce RF amplitude requirements and SAR, summed and phase-optimized standard pulses were used for excitation enabling a transverse or oblique slice orientation. The distortions were minimized with the use of parallel imaging in the phase encoding direction and a post-acquisition distortion correction. In general, GE-EPI shows higher efficiency and higher CNR in most brain areas except in some parts of the visual cortex and superior frontal pole at both the group and individual-subject levels. Gradient-echo EPI was able to detect robust activation near the air/tissue interfaces such as the orbito-frontal and subcortical regions due to reduced intra-voxel dephasing because of the thin slices used and high in-plane resolution.
Keyword BOLD
CNR
Orbito-frontal
Physiological noise
PINS
Sensitivity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Centre for Advanced Imaging Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 15 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 17 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 13 Jun 2014, 02:35:34 EST by Sandrine Ducrot on behalf of Centre for Advanced Imaging