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Whole brain high-resolution functional imaging at ultra high magnetic fields: An application to the analysis of resting state networks

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.neuroimage.2011.05.008 Byline: Federico De Martino, Fabrizio Esposito, Pierre-Francois van de Moortele, Noam Harel, Elia Formisano, Rainer Goebel, Kamil Ugurbil, Essa Yacoub Keywords: Ultra high field function... Full description

Journal Title: NeuroImage 01 August 2011, Vol.57(3), pp.1031-1044
Main Author: De Martino, Federico
Other Authors: Esposito, Fabrizio , van de Moortele, Pierre-Francois , Harel, Noam , Formisano, Elia , Goebel, Rainer , Ugurbil, Kamil , Yacoub, Essa
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1053-8119 ; E-ISSN: 1095-9572 ; DOI: 10.1016/j.neuroimage.2011.05.008
Link: https://www.sciencedirect.com/science/article/pii/S1053811911004964
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recordid: elsevier_sdoi_10_1016_j_neuroimage_2011_05_008
title: Whole brain high-resolution functional imaging at ultra high magnetic fields: An application to the analysis of resting state networks
format: Article
creator:
  • De Martino, Federico
  • Esposito, Fabrizio
  • van de Moortele, Pierre-Francois
  • Harel, Noam
  • Formisano, Elia
  • Goebel, Rainer
  • Ugurbil, Kamil
  • Yacoub, Essa
subjects:
  • Ultra High Field Functional Magnetic Resonance Imaging
  • Whole Brain Fmri
  • Resting State
  • Independent Component Analysis
  • Medicine
ispartof: NeuroImage, 01 August 2011, Vol.57(3), pp.1031-1044
description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.neuroimage.2011.05.008 Byline: Federico De Martino, Fabrizio Esposito, Pierre-Francois van de Moortele, Noam Harel, Elia Formisano, Rainer Goebel, Kamil Ugurbil, Essa Yacoub Keywords: Ultra high field functional magnetic resonance imaging; Whole brain fMRI; Resting state; Independent component analysis Abstract: Whole-brain functional magnetic resonance imaging (fMRI) allows measuring brain dynamics at all brain regions simultaneously and is widely used in research and clinical neuroscience to observe both stimulus-related and spontaneous neural activity. Ultrahigh magnetic fields (7T and above) allow functional imaging with high contrast-to-noise ratios and improved spatial resolution and specificity compared to clinical fields (1.5T and 3T). High-resolution 7T fMRI, however, has been mostly limited to partial brain coverage with previous whole-brain applications sacrificing either the spatial or temporal resolution. Here we present whole-brain high-resolution (1, 1.5 and 2mm isotropic voxels) resting state fMRI at 7T, obtained with parallel imaging technology, without sacrificing temporal resolution or brain coverage, over what is typically achieved at 3T with several fold larger voxel volumes. Using Independent Component Analysis we demonstrate that high resolution images acquired at 7T retain enough sensitivity for the reliable extraction of typical resting state brain networks and illustrate the added value of obtaining both single subject and group maps, using cortex based alignment, of the default-mode network (DMN) with high native resolution. By comparing results between multiple resolutions we show that smaller voxels volumes (1 and 1.5mm isotropic) data result in reduced partial volume effects, permitting separations of detailed spatial features within the DMN patterns as well as a better function to anatomy correspondence. Article History: Received 21 December 2010; Revised 1 May 2011; Accepted 3 May 2011
language: eng
source:
identifier: ISSN: 1053-8119 ; E-ISSN: 1095-9572 ; DOI: 10.1016/j.neuroimage.2011.05.008
fulltext: fulltext
issn:
  • 1053-8119
  • 10538119
  • 1095-9572
  • 10959572
url: Link


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