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Cited by 390Advanced MRI Techniques and ApplicationsAdvanced Neuroimaging Techniques and ApplicationsFunctional Brain Connectivity Studies

Identification of vascular structures as a major source of signal contrast in high resolution 2D and 3D functional activation imaging of the motor cortex at l.5T preliminary results

Lai, S., Hopkins, A. L., Haacke, E. M., Li, D., Wasserman, B. A., Buckley, P., Friedman, L., Meltzer, H. +2 more·1993·Magnetic Resonance in Medicine
DOI 10.1002/mrm.1910300318
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Abstract

We have measured the T2* signal response associated with cortical activation due to finger motion at 1.5 Tesla. Both thin slice 2D and 3D images show signal intensity changes which vary from 2% to 32% depending on volunteer, echo time, slice thickness, and in‐plane resolution. The largest signal change occurred for the thinnest slices and highest resolution (2 mm 3). This is consistent with reducing partial volume effects and a simple difference in phase between the intravascular signal and surrounding parenchyma. No inflow enhancement was seen on the 2D or 3D scans, confirming the nature of the signal difference for this approach was due to local field in‐homogeneity effects. Using 3D imaging, multiple effects can be seen simultaneously. With a 3D MRA method, it was possible to locate the vessel that was the source of the T2* behavior; it was in each case a vein on the surface of the cortical parenchyma.

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Crossref · 10.1002/mrm.1910300318

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  • Activity in the anterior insular cortex is common in studies of cognitive control and inhibitory processing and in studies of reward sensitivity.

    “Indeed, activity in the AIC is a common feature in studies of cognitive control and inhibitory processing [7, 46–50] and reward sensitivity [8, 9].”

    From The role of the anterior insula in adolescent decision making (2014) · cites this paper as [50]

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Authors
Lai, S., Hopkins, A. L., Haacke, E. M., Li, D., Wasserman, B. A., Buckley, P., Friedman, L., Meltzer, H., Hedera, P., & Friedland, R.
Affiliations
Case Western Reserve University (US)
Corresponding author
Haacke, E. M.
ORCID
Venue
Magnetic Resonance in Medicine
Publisher
Wiley
Published
1993-09
Volume
30
Issue
3
Pages
387-392
ISSN
  • 0740-3194 (ISSN-L)
  • 1522-2594
DOI
10.1002/mrm.1910300318
OpenAlex
W2013713875
Cited by
390
References
12
Citations by year
2025: 2 · 2024: 6 · 2023: 3 · 2022: 2 · 2021: 5 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 7 · 2016: 4 · 2015: 8 · 2014: 8 · 2013: 3 · 2012: 13
FWCI
27.54
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 4479 d)
Locations
  • Magnetic Resonance in Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (NIA AG08012)
  • National Institute of Mental Health (NIMH 41684)
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
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
vascular architecture, motor cortex activation, finger movement, 1.5 Tesla, partial volume effect, cerebral veins, cerebral blood volume, three-dimensional MR angiography
MeSH terms
Brain, Cerebrovascular Circulation, Fingers, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Motor Cortex, Movement, Signal Processing, Computer-Assisted, Time Factors

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