Evidence map›Paper›PMID 25894813›Full record

ArticleMagma (New York, N.Y.)2015

Localized semi-LASER dynamic (31)P magnetic resonance spectroscopy of the soleus during and following exercise at 7 T.

Georg B Fiedler, Martin Meyerspeer, Albrecht I Schmid, Sigrun Goluch, Kiril Schewzow, Elmar Laistler, Arash Mirzahosseini, Fabian Niess, Ewald Unger, Michael Wolzt and 1 more

Open access · greenAbstract read
In one paragraph

Article in Magma (New York, N.Y.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 8% of its field
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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. NMR in biomedicine · 2025
    Pooled it
  2. Dynamic multivoxel-localizedNMR in biomedicine · 2018
    Trial
  3. Trial
  4. Article
  5. A Novel 9-ChannelMagnetic resonance in medicine · 2026
    Article
  6. Radiology · 2024
    Observational
  7. Review
  8. Article
  9. Article
  10. InterleavedMagnetic resonance in medicine · 2020
    Article
  11. Article
  12. Article
  13. Article
  14. In-vivoAnalytical biochemistry · 2017
    Review
  15. Interleaved multivoxelMagnetic resonance in medicine · 2017
    Article
  16. DynamicNMR in biomedicine · 2016
    Article
  17. Article
  18. Article
  19. Article
  20. 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

11 authors at 2 institutions in 2 countries.

Georg B Fiedler *Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Martin Meyerspeer *Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Albrecht I SchmidCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Sigrun GoluchCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Kiril SchewzowCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Elmar LaistlerCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Arash MirzahosseiniDepartment of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary.
Fabian NiessCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Ewald UngerCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Michael WolztDepartment of Clinical Pharmacology, Medical University of Vienna, Austria.
Ewald MoserCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria.
Medical University of Vienna · ATSemmelweis University · HU

Funding

Austrian Science Fund FWF I 1743Austrian Science Fund FWF J 3031
6 · The paper itself

Abstract

objectivesThis study demonstrates the applicability of semi-LASER localized dynamic (31)P MRS to deeper lying areas of the exercising human soleus muscle (SOL). The effect of accurate localization and high temporal resolution on data specificity is investigated. MATERIALS AND

methodsTo achieve high signal-to-noise ratio (SNR) at a temporal resolution of 6 s, a custom-built human calf coil array was used at 7T. The kinetics of phosphocreatine (PCr) and intracellular pH were quantified separately in SOL and gastrocnemius medialis (GM) muscle of nine volunteers, during rest, plantar flexion exercise, and recovery.

resultsThe average SNR of PCr at rest was [Formula: see text] in SOL ([Formula: see text] in GM). End exercise PCr depletion in SOL ([Formula: see text] %) was far lower than in GM ([Formula: see text] %). The pH in SOL increased rapidly and, in contrast to GM, remained elevated until the end of exercise.

conclusion(31)P MRS in single-shots every 6 s localized in the deeper-lying SOL enabled quantification of PCr recovery times at low depletions and of fast pH changes, like the initial rise. Both high temporal resolution and accurate spatial localization improve specificity of Pi and, thus, pH quantification by avoiding multiple, and potentially indistinguishable sources for changing the Pi peak shape.

Indexed as

LasersEquipment DesignEquipment Failure AnalysisExerciseFemaleHumansMagnetic Resonance SpectroscopyMaleMuscle, SkeletalPhosphocreatinePhosphorus IsotopesReproducibility of ResultsSensitivity and SpecificityYoung AdultPhosphocreatinePhosphorus IsotopesIn vivo NMR spectroscopyPhosphocreatinePhysical exertionSkeletal muscleSoleus muscle

Identifiers

PMID25894813
PMCPMC4876918
OpenAlexW2023712965

What OpenQuestion holds

Textmetadata
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.