Cited by 71Advanced MRI Techniques and ApplicationsAdvanced NMR Techniques and ApplicationsAtomic and Subatomic Physics Research

Scalable multichannel MRI data acquisition system

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Bodurka, Jerzy, Ledden, Patrick J., van Gelderen, Peter, Chu, Renxin, de Zwart, Jacco A., Morris, Doug, Duyn, Jeff H.·2004·Magnetic Resonance in Medicine

Abstract

A scalable multichannel digital MRI receiver system was designed to achieve high bandwidth echo‐planar imaging (EPI) acquisitions for applications such as BOLD‐fMRI. The modular system design allows for easy extension to an arbitrary number of channels. A 16‐channel receiver was developed and integrated with a General Electric (GE) Signa 3T VH/3 clinical scanner. Receiver performance was evaluated on phantoms and human volunteers using a custom‐built 16‐element receive‐only brain surface coil array. At an output bandwidth of 1 MHz, a 100% acquisition duty cycle was achieved. Overall system noise figure and dynamic range were better than 0.85 dB and 84 dB, respectively. During repetitive EPI scanning on phantoms, the relative temporal standard deviation of the image intensity time‐course was below 0.2%. As compared to the product birdcage head coil, 16‐channel reception with the custom array yielded a nearly 6‐fold SNR gain in the cerebral cortex and a 1.8‐fold SNR gain in the center of the brain. The excellent system stability combined with the increased sensitivity and SENSE capabilities of 16‐channel coils are expected to significantly benefit and enhance fMRI applications. Magn Reson Med 51:165–171, 2004. Published 2003 Wiley‐Liss, Inc.

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  • A multi-element surface coil array and parallel imaging allowed whole-brain fMRI at about four times higher spatial resolution (1.7 × 1.7 × 3.5 mm3) with enough sensitivity to detect BOLD signal changes.

    “This allowed us to conduct whole-brain fMRI at roughly 4 times higher spatial resolution (1.7 × 1.7 × 3.5 mm3) and still have enough sensitivity to detect BOLD signal changes (Bodurka et al., 2007).”

    From Phasic and sustained fear in humans elicits distinct patterns of brain activity (2011) · cites this paper as Bodurka et al., 2004

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Research works printed but not linked: 2

  1. Pruessmann KP, Weiger M, Scheidegger MB, Boesiger P. SENSE: sen- sitivity encoding for fast MRI. Magn Reson Med 1999;42:952-962.
  2. Weiger M, Pruessmann KP, Boesiger P. Cardiac real-time imaging using SENSE. Magn Reson Med 2000;43:177-184.

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Authors
Bodurka, J., Ledden, P. J., van Gelderen, P., Chu, R., de Zwart, J. A., Morris, D., & Duyn, J. H.
Affiliations
  • National Institutes of Health (US)
  • Nova Medical (United States) (US)
Corresponding author
Duyn, Jeff H.
Venue
Magnetic Resonance in Medicine
Publisher
Wiley
Published
2003-12-29
Volume
51
Issue
1
Pages
165-171
ISSN
  • 0740-3194 (ISSN-L)
  • 1522-2594
OpenAlex
W2029272499
Cited by
71
References
18
Citations by year
2024: 1 · 2022: 2 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 2 · 2014: 3 · 2013: 3 · 2012: 3
FWCI
5.89
Type
journal article
Language
en
Open access
Locations
  • Magnetic Resonance in Medicine (publishedVersion, public-domain)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced NMR Techniques and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Atomic and Subatomic Physics Research
Keywords
echo planar imaging, BOLD fMRI, signal-to-noise ratio improvement, dynamic range, noise figure, senses
MeSH terms
Brain, Electronics, Equipment Design, Humans, Magnetic Resonance Imaging, Software, Phantoms, Imaging

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