Evidence map›Paper›PMID 31658398›Full record

ArticleNMR in biomedicine2021

MEGA-PRESS of GABA+: Influences of acquisition parameters.

Dinesh K Deelchand, Małgorzata Marjańska, Pierre-Gilles Henry, Melissa Terpstra

Abstract read
In one paragraph

Article in NMR in biomedicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Disentangling metabolic and neurovascular timescales supporting cognitive processes.Proceedings of the National Academy of Sciences of the United States of America · 2025
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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.

Dinesh K DeelchandCenter for Magnetic Resonance Research and Department of Radiology, University of, Minnesota, Minneapolis, MN, USA.ORCID 0000-0003-4266-4780
Małgorzata MarjańskaCenter for Magnetic Resonance Research and Department of Radiology, University of, Minnesota, Minneapolis, MN, USA.ORCID 0000-0002-4727-2447
Pierre-Gilles HenryCenter for Magnetic Resonance Research and Department of Radiology, University of, Minnesota, Minneapolis, MN, USA.
Melissa TerpstraCenter for Magnetic Resonance Research and Department of Radiology, University of, Minnesota, Minneapolis, MN, USA.

Funding

TRD4 - Ultrahigh Field Engineering and SafetyP41EB027061 · NIBIB · UNIVERSITY OF MINNESOTA · PI Gregory John Metzger, KAMIL UGURBIL · 2019 to 2026
$11.7M
NMR Imaging and SpectroscopyP41EB015894 · NIBIB · UNIVERSITY OF MINNESOTA · PI UGURBIL, KAMIL · 2012 to 2017
$8.4M
Institutional Center Cores for Advanced NeuroimagingP30NS076408 · NINDS · UNIVERSITY OF MINNESOTA · PI UGURBIL, KAMIL · 2012 to 2020
$4.2M
NIBIB NIH HHS P41 EB015894NIBIB NIH HHS P41 EB027061NINDS NIH HHS P30 NS076408
6 · The paper itself

Abstract

γ-aminobutyric acid (GABA) was the first molecule that was edited with MEGA-PRESS. GABA edited spectroscopy is challenged by limited selectivity of editing pulses. Coediting of resonances from macromolecules (MM) is the greatest single limitation of GABA edited spectroscopy. In this contribution, relative signal contributions from GABA, MM and homocarnosine to the total MEGA-PRESS edited signal at ~3 ppm, i.e., GABA+, are simulated at 3 tesla using several acquisition schemes. The base scheme is modeled after those currently supplied by vendors: it uses typical pulse shapes and lengths, it minimizes the first echo time (TE), and the delay between the editing pulses is kept at TE/2. Edited spectra are simulated for imperfect acquisition parameters such as incorrect frequency, larger chemical shift displacement, incorrect transmit B

Indexed as

Magnetic Resonance SpectroscopyCarnosineComputer Simulationgamma-Aminobutyric AcidHumansMacromolecular SubstancesCarnosinegamma-Aminobutyric AcidhomocarnosineMacromolecular SubstanceseditingGABAhomocarnosinelysinemacromoleculesmagnetic resonance spectroscopy

Identifiers

PMID31658398
PMCPMC7186154

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

Registered trials

None linked

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.