Evidence map›Paper›PMID 21772309›Full record

Trial reportJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2012

The infarct core is well represented by the acute diffusion lesion: sustained reversal is infrequent.

Bruce C V Campbell, Archana Purushotham, Soren Christensen, Patricia M Desmond, Yoshinari Nagakane, Mark W Parsons, Maarten G Lansberg, Michael Mlynash, Matus Straka, Deidre A De Silva and 6 more

Open access · bronzeAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 1 pooled it
11.8field-weighted citation impact, top 1% 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

78 citing papers in PubMed, 1 synthesis or guideline pooled it, 195 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. A multicenter randomized controlled trial of endovascular therapy following imaging evaluation for ischemic stroke (DEFUSE 3).International journal of stroke : official journal of the International Stroke Society · 2017
    Trial
  4. Spectroscopy of reperfused tissue after stroke reveals heightened metabolism in patients with good clinical outcomes.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2014
    Trial
  5. Trial
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Observational
  12. Article
  13. Article
  14. Hyperacute ischemic stroke care-Current treatment and future directions.International journal of stroke : official journal of the International Stroke Society · 2024
    Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

18 more citing papers are in PubMed but not listed here.

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

16 authors at 6 institutions in 3 countries.

Bruce C V CampbellDepartment of Medicine and Neurology, The Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia. bruce.campbell@mh.org.au
Archana Purushotham
Soren Christensen
Patricia M Desmond
Yoshinari Nagakane
Mark W Parsons
Maarten G Lansberg
Michael Mlynash
Matus Straka
Deidre A De Silva
Jean-Marc Olivot
Roland Bammer
Gregory W Albers
Geoffrey A Donnan
Stephen M Davis
EPITHET–DEFUSE Investigators
Stanford University · USStanford Medicine · USThe Royal Melbourne Hospital · AUUniversity of Melbourne · AUHunter Medical Research Institute · AUSingapore General Hospital · SG

Funding

Improving SENSE MRI for Spiral and Echo-planar Imaging in StrokeR01EB002711 · NIBIB · STANFORD UNIVERSITY · PI ALBERS, GREGORY W · 2003 to 2015
$5.1M
NEW MRI TECHNIQUES PRIOR TO T-PA THERAPY AFTER STROKER01NS039325 · NINDS · STANFORD UNIVERSITY · PI ALBERS, GREGORY W · 2000 to 2010
$4.4M
Who Benefits from tPA 3-6 hours after StrokeK23NS051372 · NINDS · STANFORD UNIVERSITY · PI LANSBERG, MAARTEN G · 2006 to 2010
$912k
New MRI techniques for cerebrovascular diseasesK24NS044848 · NINDS · STANFORD UNIVERSITY · PI ALBERS, GREGORY W · 2004 to 2008
$748k
NIBIB NIH HHS R01 EB002711NINDS NIH HHS K23 NS051372NINDS NIH HHS K24 NS044848NINDS NIH HHS R01 NS039325NINDS NIH HHS R01 NS39325
6 · The paper itself

Abstract

Diffusion-weighted imaging (DWI) is commonly used to assess irreversibly infarcted tissue but its accuracy is challenged by reports of diffusion lesion reversal (DLR). We investigated the frequency and implications for mismatch classification of DLR using imaging from the EPITHET (Echoplanar Imaging Thrombolytic Evaluation Trial) and DEFUSE (Diffusion and Perfusion Imaging Evaluation for Understanding Stroke Evolution) studies. In 119 patients (83 treated with IV tissue plasminogen activator), follow-up images were coregistered to acute diffusion images and the lesions manually outlined to their maximal visual extent in diffusion space. Diffusion lesion reversal was defined as voxels of acute diffusion lesion that corresponded to normal brain at follow-up (i.e., final infarct, leukoaraiosis, and cerebrospinal fluid (CSF) voxels were excluded from consideration). The appearance of DLR was visually checked for artifacts, the volume calculated, and the impact of adjusting baseline diffusion lesion volume for DLR volume on perfusion-diffusion mismatch analyzed. Median DLR volume reduced from 4.4 to 1.5 mL after excluding CSF/leukoaraiosis. Visual inspection verified 8/119 (6.7%) with true DLR, median volume 2.33 mL. Subtracting DLR from acute diffusion volume altered perfusion-diffusion mismatch (T(max)>6 seconds, ratio>1.2) in 3/119 (2.5%) patients. Diffusion lesion reversal between baseline and 3 to 6 hours DWI was also uncommon (7/65, 11%) and often transient. Clinically relevant DLR is uncommon and rarely alters perfusion-diffusion mismatch. The acute diffusion lesion is generally a reliable signature of the infarct core.

Indexed as

AgedBrain InfarctionDiffusion Magnetic Resonance ImagingDouble-Blind MethodFemaleFibrinolytic AgentsFollow-Up StudiesHumansInjections, IntravenousMaleProspective StudiesThrombolytic TherapyTime FactorsTissue Plasminogen ActivatorTreatment OutcomeFibrinolytic AgentsTissue Plasminogen Activator

Identifiers

PMID21772309
PMCPMC3323290
OpenAlexW2057767329

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.