Evidence map›Paper›PMID 26611996›Full record

ArticleAJNR. American journal of neuroradiology2016

Basal Ganglia Iron in Patients with Multiple Sclerosis Measured with 7T Quantitative Susceptibility Mapping Correlates with Inhibitory Control.

P Schmalbrock, R S Prakash, B Schirda, A Janssen, G K Yang, M Russell, M V Knopp, A Boster, J A Nicholas, M Racke and 1 more

Open access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 4 pooled it
4.7field-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

25 citing papers in PubMed, 4 syntheses or guidelines pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Review
  6. Article
  7. Review
  8. Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Significance andFrontiers in immunology · 2018
    Review
  18. Article
  19. Review
  20. The Role of Advanced Magnetic Resonance Imaging Techniques in Multiple Sclerosis Clinical Trials.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2017
    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

11 authors at 4 institutions in 3 countries.

P SchmalbrockFrom the Departments of Radiology (P.S., G.K.Y., M. Russell, M.V.K.) petra.schmalbrock@osumc.edu.ORCID http://orcid.org/0000-0002-4898-9984
R S PrakashPsychology (R.S.P., B.S., A.J.).
B SchirdaPsychology (R.S.P., B.S., A.J.).
A JanssenPsychology (R.S.P., B.S., A.J.).
G K YangFrom the Departments of Radiology (P.S., G.K.Y., M. Russell, M.V.K.).
M RussellFrom the Departments of Radiology (P.S., G.K.Y., M. Russell, M.V.K.).
M V KnoppFrom the Departments of Radiology (P.S., G.K.Y., M. Russell, M.V.K.).
A BosterNeurology (A.B., J.A.N., M. Racke), The Ohio State University, Columbus, Ohio.
J A NicholasNeurology (A.B., J.A.N., M. Racke), The Ohio State University, Columbus, Ohio.
M RackeNeurology (A.B., J.A.N., M. Racke), The Ohio State University, Columbus, Ohio.
D PittDepartment of Neurology (D.P.), Yale School of Medicine, New Haven, Connecticut.
Shell (Netherlands) · NLJisc · GBThe Ohio State University · USYale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeT2 hypointensity in the basal ganglia of patients with MS has been associated with clinical progression and cognitive decline. Our objectives were the following: 1) to compare signal in T2WI, R2 (ie, 1/T2), and R2* (ie, 1/T2*) relaxation rates and quantitative susceptibility mapping; and 2) to investigate the associations among MR imaging, clinical scores, and cognitive measures of inhibitory control linked to basal ganglia functioning. MATERIALS AND

methodsTwenty-nine patients with MS underwent a battery of neuropsychological tests including the Flanker and Stroop tasks. 7T MR imaging included 3D gradient-echo and single-echo multishot spin-echo EPI. Quantitative susceptibility mapping images were calculated by using a Wiener filter deconvolution algorithm. T2WI signal was normalized to CSF. R2 and R2* were calculated by log-linear regression. Average MR imaging metrics for the globus pallidus, putamen, and caudate were computed from manually traced ROIs including the largest central part of each structure.

resultsMarked spatial variation was consistently visualized on quantitative susceptibility mapping and T2/T2*WI within each basal ganglia structure. MR imaging metrics correlated with each other for each basal ganglia structure individually. Notably, caudate and putamen quantitative susceptibility mapping metrics were similar, but the putamen R2 was larger than the caudate R2. This finding suggests that tissue features contribute differently to R2 and quantitative susceptibility mapping. Caudate and anterior putamen quantitative susceptibility mapping correlated with the Flanker but not Stroop measures; R2 did not correlate with inhibitory control measures. Putamen quantitative susceptibility mapping and caudate and putamen R2 correlated with the Expanded Disability Status Scale.

conclusionsOur study showed that quantitative susceptibility mapping and R2 may be complementary indicators for basal ganglia tissue changes in MS. Our findings are consistent with the hypothesis that decreased performance of basal ganglia-reliant tasks involving inhibitory control is associated with increased quantitative susceptibility mapping.

Indexed as

AdultAgedBasal GangliaBrain MappingDisease ProgressionFemaleHumansIronMagnetic Resonance ImagingMaleMiddle AgedMultiple SclerosisIron

Identifiers

PMID26611996
PMCPMC7960135
OpenAlexW2308443623

What OpenQuestion holds

Textmetadata
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.