Evidence map›Paper›PMID 24604578›Full record

ArticleMagnetic resonance in medicine2015

Magnetization transfer from inhomogeneously broadened lines: A potential marker for myelin.

Gopal Varma, Guillaume Duhamel, Cedric de Bazelaire, David C Alsop

Abstract read
In one paragraph

Article in Magnetic resonance in medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

61 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Spatiotemporal white-matter development across early childhood.Cerebral cortex (New York, N.Y. : 1991) · 2026
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  13. So You Want to Image Myelin Using MRI: Magnetic Susceptibility Source Separation for Myelin Imaging.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2024
    Review
  14. Review
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1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Gopal VarmaDepartment of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
Guillaume Duhamel
Cedric de Bazelaire
David C Alsop

Funding

Role of Inflammation in Progressive Multifocal LeukoencephalopathyR01NS047029 · NINDS · RUSH UNIVERSITY MEDICAL CENTER · PI KORALNIK, IGOR J. · 2004 to 2018
$6.4M
NINDS NIH HHS NS047029-05NINDS NIH HHS R01 NS047029
6 · The paper itself

Abstract

purposeTo characterize a new approach to magnetization transfer (MT) imaging with improved specificity for myelinated tissues relative to conventional MT.

methodsMagnetization transfer preparation sequences were implemented with all radiofrequency power centered on a single frequency and also with power evenly divided between positive and negative frequencies. Dual frequency saturation was achieved both with short, alternating frequency pulses and with sinusoidal modulation of continuous irradiation. Images following preparation were acquired with a single shot fast spin echo sequence. Single and dual frequency preparation should achieve similar saturation of molecules except for those with inhomogenously broadened lines. Inhomogenous MT (IHMT) images were generated by subtraction of dual from single frequency prepared images. IHMT imaging was performed with different power and frequency in the brains of normal volunteers.

resultsThe IHMT method demonstrated a greater white/gray matter ratio than conventional MT and virtual elimination of signal in scalp and other unmyelinated tissues. IHMT exceeded 5% of the fully relaxed magnetization in white matter. A broad frequency spectrum and signs of axonal angular dependence at high frequency were observed that are consistent with dipolar broadening.

conclusionIHMT shows promise for myelin-specific imaging. Further study of physical mechanisms and diagnostic sensitivity are merited.

Indexed as

AdultBiomarkersBrainFemaleHumansImage Interpretation, Computer-AssistedMagnetic Resonance ImagingMaleMyelin SheathNerve Fibers, MyelinatedProton Magnetic Resonance SpectroscopyReproducibility of ResultsSensitivity and SpecificityBiomarkersbraininhomogeneous broadeningmagnetization transferMTmyelin

Identifiers

PMID24604578
PMCPMC4378005

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.