Evidence map›Paper›PMID 31868260›Full record

ArticleMagnetic resonance in medicine2020

Assessment and correction of macroscopic field variations in 2D spoiled gradient-echo sequences.

Martin Soellradl, Andreas Lesch, Johannes Strasser, Lukas Pirpamer, Rudolf Stollberger, Stefan Ropele, Christian Langkammer

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Magnetic resonance in medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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

2 citing papers in PubMed.

  1. Article
  2. Article
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

7 authors.

Martin SoellradlDepartment of Neurology, Medical University of Graz, Graz, Austria.ORCID 0000-0002-3760-5578
Andreas LeschInstitute of Medical Engineering, Graz University of Technology, Graz, Austria.ORCID 0000-0003-2492-3566
Johannes StrasserDepartment of Neurology, Medical University of Graz, Graz, Austria.ORCID 0000-0002-2396-5126
Lukas PirpamerDepartment of Neurology, Medical University of Graz, Graz, Austria.
Rudolf StollbergerInstitute of Medical Engineering, Graz University of Technology, Graz, Austria.
Stefan RopeleDepartment of Neurology, Medical University of Graz, Graz, Austria.
Christian LangkammerDepartment of Neurology, Medical University of Graz, Graz, Austria.ORCID 0000-0002-7097-9707

Funding

Austrian Science Fund FWF KLI 523
6 · The paper itself

Abstract

purposeTo model and correct the dephasing effects in the gradient-echo signal for arbitrary RF excitation pulses with large flip angles in the presence of macroscopic field variations.

methodsThe dephasing of the spoiled 2D gradient-echo signal was modeled using a numerical solution of the Bloch equations to calculate the magnitude and phase of the transverse magnetization across the slice profile. Additionally, regional variations of the transmit RF field and slice profile scaling due to macroscopic field gradients were included. Simulations, phantom, and in vivo measurements at 3 T were conducted for

resultsThe influence of macroscopic field gradients on

conclusionSubstantial improvements in

Indexed as

AlgorithmsMagnetic Resonance ImagingMyelin SheathPhantoms, Imagingfield inhomogeneitiesmyelin water fractionrelaxometryslice profile

Identifiers

PMID31868260
PMCPMC7216950

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Registered trials

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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.