Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

A phased array echoplanar imaging system for fMRI

Frederick B deB1, L L Wald, L C Maas

  • 1McLean Hospital, Brain Imaging Center, Belmont, MA 02478, USA. frederic@kuru.mclean.org

Magnetic Resonance Imaging
|January 15, 1999
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Open-source device for high sensitivity magnetic particle spectroscopy, relaxometry, and hysteresis loop tracing.

The Review of scientific instruments·2024
Same author

Clinical Evaluation of Scout Accelerated Motion Estimation and Reduction Technique for 3D MR Imaging in the Inpatient and Emergency Department Settings.

AJNR. American journal of neuroradiology·2023
Same author

Baseline brain function in the preadolescents of the ABCD Study.

Nature neuroscience·2021
Same author

Imaging G-Ratio in Multiple Sclerosis Using High-Gradient Diffusion MRI and Macromolecular Tissue Volume.

AJNR. American journal of neuroradiology·2019
Same author

Unique prefrontal GABA and glutamate disturbances in co-occurring bipolar disorder and alcohol dependence.

Translational psychiatry·2017
Same author

Animal models to improve our understanding and treatment of suicidal behavior.

Translational psychiatry·2017
Same journal

Systematic comparison of MPRAGE and BRAVO T1-weighted MRI pulse sequences and brain morphometry in high-risk young adults.

Magnetic resonance imaging·2026
Same journal

Foot dynamic contrast-enhanced MRI for assessing microcirculatory changes after endovascular therapy in peripheral artery disease: A prospective pilot study.

Magnetic resonance imaging·2026
Same journal

Reconstruction of MRI from undersampled k-spaces of double-contrast volume acquisitions using deep neural networks.

Magnetic resonance imaging·2026
Same journal

Radiofrequency-induced heating safety of brain MRI scans at 7 T in the presence of a shoulder implant.

Magnetic resonance imaging·2026
Same journal

Incremental diagnostic value of microstructural time-dependent diffusion MRI in differentiating PCNSL from glioblastoma over conventional MRI.

Magnetic resonance imaging·2026
Same journal

Enhanced respiratory motion compensation in free-breathing dynamic contrast-enhanced MRI with GROG-facilitated bunch phase encoding and Golden angle radial sampling.

Magnetic resonance imaging·2026
See all related articles

A new phased array receiver system significantly improves signal-to-noise ratio (SNR) in echo-planar imaging (EPI) for brain imaging. This enhances the detection of brain activity and blood volume changes during functional MRI (fMRI) studies.

Area of Science:

  • Neuroimaging
  • Magnetic Resonance Imaging (MRI)
  • Signal Processing

Background:

  • Clinical echoplanar imaging (EPI) requires advanced receiver systems to optimize signal detection.
  • Blood-oxygen-level-dependent (BOLD) and relative cerebral blood volume (rCBV) imaging are crucial for assessing brain function and perfusion.

Purpose of the Study:

  • To evaluate a fully parallel, simultaneous sampling phased array receiver system for BOLD and rCBV experiments.
  • To assess the system's performance compared to conventional surface and head coils.

Main Methods:

  • Development and implementation of a 4-coil phased array receiver system for EPI.
  • Comparison of signal-to-noise ratio (SNR) improvements using the phased array system versus a standard surface coil and a quadrature head coil.

Related Experiment Videos

  • Evaluation of BOLD activation and rCBV mapping in human subjects.

    • Main Results:

    • A 4-coil array around the occipital lobe improved SNR by 1.5x in the visual cortex and 3.1x in the visual association cortex.
    • A 4-coil bilateral array increased head-wide SNR by up to 5x compared to a quadrature head coil.
    • Proportional improvements in the SNR of rCBV maps were observed.

    Conclusions:

    • The developed phased array receiver system offers substantial SNR enhancements for clinical EPI.
    • These improvements lead to better statistical significance and coverage of activation maps in visual cortex studies.
    • The system shows significant potential for advancing functional MRI techniques, including rCBV mapping.