Cited by 95Advanced MRI Techniques and ApplicationsAdvanced Neuroimaging Techniques and ApplicationsNMR spectroscopy and applications

MR susceptibility imaging

Open access
Duyn, Jeff·2013·Journal of Magnetic Resonance

Abstract

This work reviews recent developments in the use of magnetic susceptibility contrast for human MRI, with a focus on the study of brain anatomy. The increase in susceptibility contrast with modern high field scanners has led to novel applications and insights into the sources and mechanism contributing to this contrast in brain tissues. Dedicated experiments have demonstrated that in most of healthy brain, iron and myelin dominate tissue susceptibility variations, although their relative contribution varies substantially. Local variations in these compounds can affect both amplitude and frequency of the MRI signal. In white matter, the myelin sheath introduces an anisotropic susceptibility that has distinct effects on the water compartments inside the axons, between the myelin sheath, and the axonal space, and renders their signals dependent on the angle between the axon and the magnetic field. This offers opportunities to derive tissue properties specific to these cellular compartments.

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Crossref · 10.1016/j.jmr.2012.11.013

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  • Myelin and iron decrease T2*, but have an opposing effect on frequency owing to the diamagnetic properties of myelin (as opposed to iron's paramagnetic properties).

    “Myelin and iron decrease T2*, but have an opposing effect on frequency owing to the diamagnetic properties of myelin (as opposed to iron’s paramagnetic properties).204”
  • Studies at high-field strength show that the confounding effect of myelin on T2* can be accounted for by including frequency information, which is normally discarded.

    “Additionally, studies at high-field strength show that the confounding effect of myelin on T2* can be accounted for by including frequency information, which is normally discarded.51,203,204”

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Authors
Duyn, J.
Affiliations
National Institutes of Health (US)
Corresponding author
Duyn, Jeff
Venue
Journal of Magnetic Resonance
Publisher
Elsevier BV
Published
2013-04
Volume
229
Pages
198-207
ISSN
1090-7807 (ISSN-L)
OpenAlex
W2172159160
Cited by
95
References
108
Citations by year
2026: 2 · 2025: 5 · 2024: 4 · 2023: 6 · 2022: 3 · 2021: 10 · 2020: 13 · 2019: 6 · 2018: 10 · 2017: 9 · 2016: 10 · 2015: 5 · 2014: 8 · 2013: 4
FWCI
4.11
Type
journal article
Language
en
Open access
Locations
  • Journal of Magnetic Resonance (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (ZIANS002990)
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
magnetic susceptibility contrast, brain MRI, iron, myelin, white matter, anisotropic susceptibility, high-field MRI
MeSH terms
Algorithms, Animals, Axons, Brain, Brain Chemistry, Electromagnetic Fields, Humans, Image Processing, Computer-Assisted, Iron, Magnetic Resonance Imaging, Myelin Sheath, Anisotropy, Echo-Planar Imaging

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