Cited by 1,285Advanced MRI Techniques and ApplicationsAdvanced Neuroimaging Techniques and ApplicationsNMR spectroscopy and applications

Blipped‐controlled aliasing in parallel imaging for simultaneous multislice echo planar imaging with reduced g ‐factor penalty

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Setsompop, Kawin, Gagoski, Borjan A., Polimeni, Jonathan R., Witzel, Thomas, Wedeen, Van J., Wald, Lawrence L.·2012·Magnetic Resonance in Medicine

Abstract

Simultaneous multislice Echo Planar Imaging (EPI) acquisition using parallel imaging can decrease the acquisition time for diffusion imaging and allow full-brain, high-resolution functional MRI (fMRI) acquisitions at a reduced repetition time (TR). However, the unaliasing of simultaneously acquired, closely spaced slices can be difficult, leading to a high g-factor penalty. We introduce a method to create interslice image shifts in the phase encoding direction to increase the distance between aliasing pixels. The shift between the slices is induced using sign- and amplitude-modulated slice-select gradient blips simultaneous with the EPI phase encoding blips. This achieves the desired shifts but avoids an undesired "tilted voxel" blurring artifact associated with previous methods. We validate the method in 3× slice-accelerated spin-echo and gradient-echo EPI at 3 T and 7 T using 32-channel radio frequency (RF) coil brain arrays. The Monte-Carlo simulated average g-factor penalty of the 3-fold slice-accelerated acquisition with interslice shifts is <1% at 3 T (compared with 32% without slice shift). Combining 3× slice acceleration with 2× inplane acceleration, the g-factor penalty becomes 19% at 3 T and 10% at 7 T (compared with 41% and 23% without slice shift). We demonstrate the potential of the method for accelerating diffusion imaging by comparing the fiber orientation uncertainty, where the 3-fold faster acquisition showed no noticeable degradation.

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  • Multiband accelerated EPI enables major improvements in spatial and/or temporal resolution, for example acquiring data with 2mm spatial resolution in less than a second.

    ““multiband accelerated EPI” acquires multiple slices simultaneously [39, 40]. Such approaches enable major improvements in spatial and/or temporal resolution, for example acquiring data with 2mm spatial resolution in less than a second.”

    From Functional connectomics from resting-state fMRI (2013) · cites this paper as [40]

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3 of the 30 references couldn’t be matched to a known paper.

Research works printed but not linked: 5

  1. [8]Witzel T Polimeni JR Wiggins GC Lin F-H Biber S Hamm M Seethamraju R Wald LL Single-Shot Echo-Volumar Imaging Using Highly Parallel Detection Proceedings of the 16th Annual Meeting of ISMRM Toronto, Canada 2008 2367
  2. [11]Wu EL Chen J-H Chiueh T-D Wideband MRI: a New Dimension of MR Image Acceleration Proceedings of the 17th Annual Meeting of ISMRM Hawaii, USA 2009 2678
  3. [16]Nunes RG Hajnal JV Golay X Larkman DJ Simultaneous Slice Excitation and Reconstruction for Single Shot EPI Proceedings of the 14th Annual Meeting of ISMRM Seattle, Washington, USA 2006 293
  4. [18]Setsompop K Gagoski BA Polimeni J Witzel TW VJ Wald LL Blipped CAIPIRHINA for simultaneous multi-slice EPI with reduced g-factor penalty Proceedings of the 18th Annual Meeting of ISMRM Stockholm, Sweden 2010 551
  5. [20]Keil B Triantafyllou C Hamm M Wald LL Design Optimization of a 32-Channel Head Coil at 7T Proceedings of the 18th Annual Meeting of ISMRM Stockholm, Sweden 2010 1493

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Authors
Setsompop, K., Gagoski, B. A., Polimeni, J. R., Witzel, T., Wedeen, V. J., & Wald, L. L.
Affiliations
  • Harvard University (US)
  • Massachusetts Institute of Technology (US)
  • Massachusetts General Hospital (US)
Corresponding author
Setsompop, Kawin
Venue
Magnetic Resonance in Medicine
Publisher
Wiley
Published
2011-08-19
Volume
67
Issue
5
Pages
1210-1224
ISSN
  • 0740-3194 (ISSN-L)
  • 1522-2594
OpenAlex
W2053759320
Cited by
1,285
References
30
Citations by year
2026: 65 · 2025: 89 · 2024: 79 · 2023: 74 · 2022: 102 · 2021: 121 · 2020: 110 · 2019: 133 · 2018: 122 · 2017: 118 · 2016: 89 · 2015: 76 · 2014: 44 · 2013: 45 · 2012: 14
FWCI
25.71
Type
journal article
Language
en
Open access
Locations
  • Magnetic Resonance in Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
16 National Institutes of Health Institutes and Centers that support the NIH Blueprint for Neuroscience (K99EB012107, R01EB006847, R01EB007942 (NIH NIBIB grants), P41RR14075 (NCRR grant))
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › NMR spectroscopy and applications
Keywords
parallel imaging, phase encoding, aliasing, functional MRI, spin-echo EPI, gradient-echo EPI
MeSH terms
Algorithms, Brain, Humans, Image Enhancement, Image Interpretation, Computer-Assisted, Pattern Recognition, Automated, Sensitivity and Specificity, Signal Processing, Computer-Assisted, Reproducibility of Results, Artifacts, Echo-Planar Imaging, Imaging, Three-Dimensional

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