Evidence map›Paper›PMID 32681555›Full record

ArticleNMR in biomedicine2020

Quantitative MRI of skeletal muscle in a cross-sectional cohort of patients with spinal muscular atrophy types 2 and 3.

Louise A M Otto, W-Ludo van der Pol, Lara Schlaffke, Camiel A Wijngaarde, Marloes Stam, Renske I Wadman, Inge Cuppen, Ruben P A van Eijk, Fay-Lynn Asselman, Bart Bartels and 3 more

Open access · hybridAbstract read
In one paragraph

Article in NMR in biomedicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% 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

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Pooled it
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  17. Review
  18. Compositional and Functional MRI of Skeletal Muscle: A Review.Journal of magnetic resonance imaging : JMRI · 2024
    Review
  19. Article
  20. Applications of Diffusion-Weighted MRI to the Musculoskeletal System.Journal of magnetic resonance imaging : JMRI · 2024
    Review
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

13 authors at 2 institutions in 2 countries.

Louise A M OttoDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.ORCID 0000-0003-2998-4683
W-Ludo van der PolDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Lara SchlaffkeDepartment of Neurology, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany.ORCID 0000-0002-0716-3780
Camiel A WijngaardeDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Marloes StamDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Renske I WadmanDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Inge CuppenDepartment of Neurology and Child Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Ruben P A van EijkDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Fay-Lynn AsselmanDepartment of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Bart BartelsDepartment of Child Development and Exercise Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Danny van der WoudeDepartment of Child Development and Exercise Center, University Medical Center Utrecht, Utrecht University, the Netherlands.
Jeroen HendrikseDepartment of Radiology, University Medical Center Utrecht, Utrecht University, the Netherlands.
Martijn FroelingDepartment of Radiology, University Medical Center Utrecht, Utrecht University, the Netherlands.ORCID 0000-0003-3841-0497
Utrecht University · NLBG University Hospital Bergmannsheil Bochum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to document upper leg involvement in spinal muscular atrophy (SMA) with quantitative MRI (qMRI) in a cross-sectional cohort of patients of varying type, disease severity and age. Thirty-one patients with SMA types 2 and 3 (aged 29.6 [7.6-73.9] years) and 20 healthy controls (aged 37.9 [17.7-71.6] years) were evaluated in a 3 T MRI with a protocol consisting of DIXON, T2 mapping and diffusion tensor imaging (DTI). qMRI measures were compared with clinical scores of motor function (Hammersmith Functional Motor Scale Expanded [HFMSE]) and muscle strength. Patients exhibited an increased fat fraction and fractional anisotropy (FA), and decreased mean diffusivity (MD) and T2 compared with controls (all P < .001). DTI parameters FA and MD manifest stronger effects than can be accounted for the effect of fatty replacement. Fat fraction, FA and MD show moderate correlation with muscle strength and motor function: FA is negatively associated with HFMSE and Medical Research Council sum score (τ = -0.56 and -0.59; both P < .001) whereas for fat fraction values are τ = -0.50 and -0.58, respectively (both P < .001). This study shows that DTI parameters correlate with muscle strength and motor function. DTI findings indirectly indicate cell atrophy and act as a measure independently of fat fraction. Combined these data suggest the potential of muscle DTI in monitoring disease progression and to study SMA pathogenesis in muscle.

Indexed as

Magnetic Resonance ImagingAdolescentAdultAgedAge FactorsChildCohort StudiesCross-Sectional StudiesDatabases as TopicDiffusion Tensor ImagingFemaleHumansMaleMiddle AgedMuscle, SkeletalMuscular Atrophy, Spinaldiffusion tensor imagingmagnetic resonance imagingquantitative imagingskeletal musclespinal muscular atrophy

Identifiers

PMID32681555
PMCPMC7507182
OpenAlexW3043287113

What OpenQuestion holds

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LicenceCC BY
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.