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Comparison of SMS-EPI and 3D-EPI at 7T in an fMRI localizer study with matched spatiotemporal resolution and homogenized excitation profiles

The simultaneous multi-slice EPI (SMS-EPI, a.k.a. MB-EPI) sequence has met immense popularity recently in functional neuroimaging. A still less common alternative is the use of 3D-EPI, which offers similar acceleration capabilities. The aim of this work was to compare the SMS-EPI and the 3D-EPI sequ... Full description

Journal Title: PLoS ONE 21 November 2019, Vol.14(11), p.e0225286
Main Author: Le Ster, Caroline
Other Authors: Moreno, Antonio , Mauconduit, Franck , Gras, Vincent , Stirnberg, Ruediger , Poser, Benedikt A , Vignaud, Alexandre , Eger, Evelyn , Dehaene, Stanislas , Meyniel, Florent , Boulant, Nicolas
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1932-6203 ; E-ISSN: 1932-6203 ; DOI: 10.1371/journal.pone.0225286
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recordid: hal_soai_HAL_inserm_02407701v1
title: Comparison of SMS-EPI and 3D-EPI at 7T in an fMRI localizer study with matched spatiotemporal resolution and homogenized excitation profiles
format: Article
creator:
  • Le Ster, Caroline
  • Moreno, Antonio
  • Mauconduit, Franck
  • Gras, Vincent
  • Stirnberg, Ruediger
  • Poser, Benedikt A
  • Vignaud, Alexandre
  • Eger, Evelyn
  • Dehaene, Stanislas
  • Meyniel, Florent
  • Boulant, Nicolas
subjects:
  • Life Sciences
  • Bioengineering
  • Imaging
  • Life Sciences
  • Neurons and Cognition
  • Cognitive Sciences
  • Sciences (General)
ispartof: PLoS ONE, 21 November 2019, Vol.14(11), p.e0225286
description: The simultaneous multi-slice EPI (SMS-EPI, a.k.a. MB-EPI) sequence has met immense popularity recently in functional neuroimaging. A still less common alternative is the use of 3D-EPI, which offers similar acceleration capabilities. The aim of this work was to compare the SMS-EPI and the 3D-EPI sequences in terms of sampling strategies for the detection of task-evoked activations at 7T using detection theory. To this end, the spatial and temporal resolutions of the sequences were matched (1.6 mm isotropic resolution, TR = 1200 ms) and their excitation profiles were homogenized by means of calibration-free parallel-transmission (Universal Pulses). We used a fast-event "localizer" paradigm of 5:20 min in order to probe sensorimotor functions (visual, auditory and motor tasks) as well as higher level functions (language comprehension, mental calculation), where results from a previous large-scale study at 3T (N = 81) served as ground-truth reference for the brain areas implicated...
language: eng
source:
identifier: ISSN: 1932-6203 ; E-ISSN: 1932-6203 ; DOI: 10.1371/journal.pone.0225286
fulltext: fulltext
issn:
  • 1932-6203
  • 19326203
url: Link


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titleComparison of SMS-EPI and 3D-EPI at 7T in an fMRI localizer study with matched spatiotemporal resolution and homogenized excitation profiles
creatorLe Ster, Caroline ; Moreno, Antonio ; Mauconduit, Franck ; Gras, Vincent ; Stirnberg, Ruediger ; Poser, Benedikt A ; Vignaud, Alexandre ; Eger, Evelyn ; Dehaene, Stanislas ; Meyniel, Florent ; Boulant, Nicolas
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subjectLife Sciences ; Bioengineering ; Imaging ; Life Sciences ; Neurons and Cognition ; Cognitive Sciences ; Sciences (General)
descriptionThe simultaneous multi-slice EPI (SMS-EPI, a.k.a. MB-EPI) sequence has met immense popularity recently in functional neuroimaging. A still less common alternative is the use of 3D-EPI, which offers similar acceleration capabilities. The aim of this work was to compare the SMS-EPI and the 3D-EPI sequences in terms of sampling strategies for the detection of task-evoked activations at 7T using detection theory. To this end, the spatial and temporal resolutions of the sequences were matched (1.6 mm isotropic resolution, TR = 1200 ms) and their excitation profiles were homogenized by means of calibration-free parallel-transmission (Universal Pulses). We used a fast-event "localizer" paradigm of 5:20 min in order to probe sensorimotor functions (visual, auditory and motor tasks) as well as higher level functions (language comprehension, mental calculation), where results from a previous large-scale study at 3T (N = 81) served as ground-truth reference for the brain areas implicated...
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The simultaneous multi-slice EPI (SMS-EPI, a.k.a. MB-EPI) sequence has met immense popularity recently in functional neuroimaging. A still less common alternative is the use of 3D-EPI, which offers similar acceleration capabilities. The aim of this work was to compare the SMS-EPI and the 3D-EPI sequences in terms of sampling strategies for the detection of task-evoked activations at 7T using detection theory. To this end, the spatial and temporal resolutions of the sequences were matched (1.6 mm isotropic resolution, TR = 1200 ms) and their excitation profiles were homogenized by means of calibration-free parallel-transmission (Universal Pulses). We used a fast-event "localizer" paradigm of 5:20 min in order to probe sensorimotor functions (visual, auditory and motor tasks) as well as higher level functions (language comprehension, mental calculation), where results from a previous large-scale study at 3T (N = 81) served as ground-truth reference for the brain areas implicated...

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abstract

The simultaneous multi-slice EPI (SMS-EPI, a.k.a. MB-EPI) sequence has met immense popularity recently in functional neuroimaging. A still less common alternative is the use of 3D-EPI, which offers similar acceleration capabilities. The aim of this work was to compare the SMS-EPI and the 3D-EPI sequences in terms of sampling strategies for the detection of task-evoked activations at 7T using detection theory. To this end, the spatial and temporal resolutions of the sequences were matched (1.6 mm isotropic resolution, TR = 1200 ms) and their excitation profiles were homogenized by means of calibration-free parallel-transmission (Universal Pulses). We used a fast-event "localizer" paradigm of 5:20 min in order to probe sensorimotor functions (visual, auditory and motor tasks) as well as higher level functions (language comprehension, mental calculation), where results from a previous large-scale study at 3T (N = 81) served as ground-truth reference for the brain areas implicated...

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