Cited by 52Advanced Neuroimaging Techniques and ApplicationsAdvanced MRI Techniques and ApplicationsFunctional Brain Connectivity Studies

Angular versus spatial resolution trade-offs for diffusion imaging under time constraints

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Zhan, Liang, Jahanshad, Neda, Ennis, Daniel B., Jin, Yan, Bernstein, Matthew A., Borowski, Bret J., Jack, Clifford R., Toga, Arthur W. +2 more·2013·Human Brain Mapping

Abstract

Diffusion weighted magnetic resonance imaging (DW-MRI) are now widely used to assess brain integrity in clinical populations. The growing interest in mapping brain connectivity has made it vital to consider what scanning parameters affect the accuracy, stability, and signal-to-noise of diffusion measures. Trade-offs between scan parameters can only be optimized if their effects on various commonly-derived measures are better understood. To explore angular versus spatial resolution trade-offs in standard tensor-derived measures, and in measures that use the full angular information in diffusion signal, we scanned eight subjects twice, 2 weeks apart, using three protocols that took the same amount of time (7 min). Scans with 3.0, 2.7, 2.5 mm isotropic voxels were collected using 48, 41, and 37 diffusion-sensitized gradients to equalize scan times. A specially designed DTI phantom was also scanned with the same protocols, and different b-values. We assessed how several diffusion measures including fractional anisotropy (FA), mean diffusivity (MD), and the full 3D orientation distribution function (ODF) depended on the spatial/angular resolution and the SNR. We also created maps of stability over time in the FA, MD, ODF, skeleton FA of 14 TBSS-derived ROIs, and an information uncertainty index derived from the tensor distribution function, which models the signal using a continuous mixture of tensors. In scans of the same duration, higher angular resolution and larger voxels boosted SNR and improved stability over time. The increased partial voluming in large voxels also led to bias in estimating FA, but this was partially addressed by using "beyond-tensor" models of diffusion.

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  1. Jones DK Horsfield MA Simmons A Optimal strategies for measuring diffusion in anisotropic systems by magnetic resonance imaging Magnetic Resonance in Medicine 1999 42 3 515 525 10467296
  2. Lepore N Chou YY Lopez OL Aizenstein HJ Becker JT Toga AW Thompson PM Fast 3D Fluid Registration of Brain Magnetic Resonance Images SPIE 2008 2008 PMC6289542 30546193
  3. Lepore N Brun CC Descoteaux M Lee AD Barysheva M Chou YY McMahon KL de Zubicaray GI Martin NG Wright MJ Gee JC Thompson PM A Multivariate Groupwise Genetic Analysis of White Matter Integrity using Orientation Distribution Functions MICCAI Workshop on Computational Diffusion MRI 2010 in press.
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Authors
Zhan, L., Jahanshad, N., Ennis, D. B., Jin, Y., Bernstein, M. A., Borowski, B. J., Jack, C. R., Toga, A. W., Leow, A. D., & Thompson, P. M.
Affiliations
  • University of California, Los Angeles (US)
  • Department of Radiology; Mayo Clinic; Rochester; Minnesota
  • Mayo Clinic (US)
  • University of Illinois Urbana-Champaign (US)
Venue
Human Brain Mapping
Publisher
Wiley
Published
2012-04-21
Volume
34
Issue
10
Pages
2688-2706
ISSN
1065-9471 (ISSN-L)
OpenAlex
W1568946913
Cited by
52
References
40
Citations by year
2026: 2 · 2025: 2 · 2022: 2 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 4 · 2015: 6 · 2014: 11 · 2013: 11 · 2012: 3
FWCI
7.49
Type
journal article
Language
en
Open access
Locations
  • Human Brain Mapping (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (RC2AG036535)
  • National Institute of Biomedical Imaging and Bioengineering (R01EB008432, R01EB008281, R01EB007813, EB008281, EB 007813, EB008432, P41EB015922)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD 050735, R01HD050735)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
diffusion-weighted imaging, angular resolution, spatial resolution, resolution trade-off, fractional anisotropy, mean diffusivity, orientation distribution function, signal-to-noise ratio, test-retest stability, b-value, brain connectivity mapping
MeSH terms
Adult, Algorithms, Brain Mapping, Computer Simulation, Female, Humans, Image Processing, Computer-Assisted, Male, Models, Neurological, Nerve Fibers, Reference Values, Research Design, Time Factors, Reproducibility of Results, Artifacts, Echo-Planar Imaging, Phantoms, Imaging, Head Movements, Diffusion Magnetic Resonance Imaging, Signal-To-Noise Ratio

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