Evidence map›Paper›PMID 25634718›Full record

SynthesisAJNR. American journal of neuroradiology2015

Imaging biomarkers in acute ischemic stroke trials: a systematic review.

G W J Harston, N Rane, G Shaya, S Thandeswaran, M Cellerini, F Sheerin, J Kennedy

Abstract readSystematic Review
In one paragraph

Synthesis in AJNR. American journal of neuroradiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Trial
  2. Article
  3. Extensive ischemic change on stroke presentation is uncommon: A population-based study.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Update on Neurocritical Care of Stroke.Current cardiology reports · 2017
    Review
  19. Optimizing image registration and infarct definition in stroke research.Annals of clinical and translational neurology · 2017
    Article
  20. Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

G W J HarstonFrom the Radcliffe Department of Medicine (G.W.J.H., G.S., S.T., J.K.), University of Oxford, Oxford, United Kingdom george.harston@rdm.ox.ac.uk.
N RaneDepartment of Neuroradiology (N.R., M.C., F.S.), Oxford University Hospitals NHS Trust, Oxford, United Kingdom Neurointervention Service (N.R.), Royal Melbourne Hospital, Melbourne Health, Victoria, Australia.
G ShayaFrom the Radcliffe Department of Medicine (G.W.J.H., G.S., S.T., J.K.), University of Oxford, Oxford, United Kingdom.
S ThandeswaranFrom the Radcliffe Department of Medicine (G.W.J.H., G.S., S.T., J.K.), University of Oxford, Oxford, United Kingdom.
M CelleriniDepartment of Neuroradiology (N.R., M.C., F.S.), Oxford University Hospitals NHS Trust, Oxford, United Kingdom.
F SheerinDepartment of Neuroradiology (N.R., M.C., F.S.), Oxford University Hospitals NHS Trust, Oxford, United Kingdom.
J KennedyFrom the Radcliffe Department of Medicine (G.W.J.H., G.S., S.T., J.K.), University of Oxford, Oxford, United Kingdom.

Funding

Medical Research Council G0701128The Dunhill Medical Trust OSRP1/1006Wellcome TrustWellcome Trust WT 088877/Z/09/Z
6 · The paper itself

Abstract

background and purposeImaging biomarkers are increasingly used to provide a better understanding of the pathophysiology of acute ischemic stroke. However, this approach of routinely using imaging biomarkers to inform treatment decisions has yet to be translated into successful randomized trials. The aim of this study was to systematically review the use of imaging biomarkers in randomized controlled trials in patients with acute ischemic stroke, exploring the purposes for which the imaging biomarkers were used. MATERIALS AND

methodsWe performed a systematic review of imaging biomarkers used in randomized controlled trials of acute ischemic stroke, in which a therapeutic intervention was trialed within 48 hours of symptom onset. Data bases searched included MEDLINE, EMBASE, strokecenter.org, and the Virtual International Stroke Trials Archive (1995-2014).

resultsEighty-four studies met the criteria, of which 49 used imaging to select patients; 31, for subgroup analysis; and 49, as an outcome measure. Imaging biomarkers were broadly used for 8 purposes. There was marked heterogeneity in the definitions and uses of imaging biomarkers and significant publication bias among post hoc analyses.

conclusionsImaging biomarkers offer the opportunity to refine the trial cohort by minimizing participant variation, to decrease sample size, and to personalize treatment approaches for those who stand to benefit most. However, within imaging modalities, there has been little consistency between stroke trials. Greater effort to prospectively use consistent imaging biomarkers should help improve the development of novel treatment strategies in acute stroke and improve comparison between studies.

Indexed as

Randomized Controlled Trials as TopicHumansMaleMiddle AgedNeuroimagingOutcome Assessment, Health CareStroke

Identifiers

PMID25634718
PMCPMC5524169

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.