Evidence map›Paper›PMID 30924566›Full record

ArticleNMR in biomedicine2019

Reproducibility of human cardiac phosphorus MRS (

Jane Ellis, Ladislav Valkovič, Lucian A B Purvis, William T Clarke, Christopher T Rodgers

Abstract read
In one paragraph

Article in NMR in biomedicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Repeatability of Rapid Human Cardiac Phosphorus MRSI (Magnetic resonance in medicine · 2026
    Article
  2. NMR in biomedicine · 2026
    Article
  3. Imaging of metabolic dysfunction in genetic cardiomyopathies.The international journal of cardiovascular imaging · 2025
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  6. 3D ultra-short echo timeResearch square · 2024
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  7. 17β-Estradiol Effects in Skeletal Muscle: ADiagnostics (Basel, Switzerland) · 2024
    Article
  8. Article
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  10. CardiacHeart failure reviews · 2023
    Review
  11. Article
  12. Article
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  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. PCA denoising and Wiener deconvolution ofMagnetic resonance in medicine · 2021
    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

5 authors.

Jane EllisOCMR, RDM Cardiovascular Medicine, University of Oxford, UK.ORCID 0000-0002-2396-9741
Ladislav ValkovičOCMR, RDM Cardiovascular Medicine, University of Oxford, UK.
Lucian A B PurvisOCMR, RDM Cardiovascular Medicine, University of Oxford, UK.
William T ClarkeOCMR, RDM Cardiovascular Medicine, University of Oxford, UK.ORCID 0000-0001-7159-7025
Christopher T RodgersOCMR, RDM Cardiovascular Medicine, University of Oxford, UK.

Funding

Agentúra na Podporu Výskumu a Vývoja #15-0029Medical Research Council HST00040/HS00.1Sir Henry Dale Fellowship from the Wellcome Trust and the Royal Society 098436/Z/12/BVedecká Grantová Agentúra MŠVVaŠ SR a SAV #2/0001/17Wellcome Trust 098436
6 · The paper itself

Abstract

purposeWe test the reproducibility of human cardiac phosphorus MRS (

methods10 healthy subjects were scanned on two occasions: one to test the 28 min 3D-CSI protocol, and one to test the 6½ min protocol. Spectra were fitted using the OXSA MATLAB toolbox. The phosphocreatine to adenosine triphosphate concentration ratio (PCr/ATP) from each scan was analysed for intra- and intersubject variability. The impact of different strategies for voxel selection was assessed.

resultsThere were no significant differences between repeated measurements in the same subject. For the 28 min protocol, PCr/ATP in the midseptal voxel across all scans was 1.91 ± 0.36 (mean ± intersubject SD). For the 6½ min protocol, PCr/ATP in the midseptal voxel was 1.76 ± 0.40. The coefficients of reproducibility (CRs) were 0.49 (28 min) and 0.67 (6½ min). Per-subject B

conclusionsBoth 7 T protocols show improved reproducibility compared with a previous 3 T study by Tyler et al. Our results will enable informed power calculations and protocol selection for future clinical research studies.

Indexed as

Magnetic Resonance SpectroscopyAdenosine TriphosphateAdultFemaleHumansMaleMyocardiumPhosphocreatinePhosphorusReproducibility of ResultsSample SizeTime FactorsAdenosine TriphosphatePhosphocreatinePhosphorus31P7 TcardiachumanMRSreproducibility

Identifiers

PMID30924566
PMCPMC6546607

What OpenQuestion holds

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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.