Evidence map›Paper›PMID 31160620›Full record

ArticleScientific reports2019

Measurement of collateral perfusion in acute stroke: a vessel-encoded arterial spin labeling study.

Thomas W Okell, George W J Harston, Michael A Chappell, Fintan Sheerin, James Kennedy, Peter Jezzard

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Arterial Spin Labeling: Key Concepts and Progress Towards Use as a Clinical Tool.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2024
    Review
  6. Article
  7. Observational
  8. Article
  9. Article
  10. Evaluation of T2-FLAIR combined with ASL on the collateral circulation of acute ischemic stroke.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Article
  11. Article
  12. Article
  13. Article
  14. 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

6 authors.

Thomas W OkellWellcome Centre for Integrative Neuroimaging (FMRIB), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK. tokell@fmrib.ox.ac.uk.
George W J HarstonAcute Vascular Imaging Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0003-4916-5757
Michael A ChappellIBME, Department of Engineering Sciences, University of Oxford, Oxford, UK.
Fintan SheerinDepartment of Neuroradiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
James KennedyAcute Vascular Imaging Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
Peter JezzardWellcome Centre for Integrative Neuroimaging (FMRIB), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.

Funding

Wellcome TrustWellcome Trust 203139/Z/16/ZWellcome Trust WT088877/Z/09/Z
6 · The paper itself

Abstract

Collateral perfusion is important for sustaining tissue viability in acute ischemic stroke. Conventional techniques for its visualization are invasive, require contrast agents and demonstrate collateral vessels, rather than measuring perfusion directly. In this study we utilize a non-invasive, non-contrast magnetic resonance imaging (MRI)-based method to directly quantify collateral perfusion in acute stroke patients. Vessel-encoded multi-postlabeling delay arterial spin labeling (ASL) was used to separately quantify the blood flow and blood arrival time from four arteries supplying the brain in patients presenting within 18 hours of stroke onset. Twenty-nine acute ischemic stroke patients were scanned with a median time of onset to first MRI of 3 hours. Collateral perfusion at presentation was associated with tissue fate at 1-week. It sustained tissue prior to reperfusion, but was less effective than direct blood flow at maintaining tissue viability in patients who did not reperfuse. Delay in the blood arrival around the ischemic region was found at presentation and reduced over time but was not consistently associated with collateral perfusion. Vessel-encoded multi-postlabeling delay ASL provides a non-invasive tool for direct measurement of collateral perfusion and delayed blood arrival in acute stroke patients.

Indexed as

Magnetic Resonance ImagingAgedArteriesBlood VesselsBrainCerebrovascular CirculationFemaleHumansMalePerfusion ImagingSpin LabelsStrokeSpin Labels

Identifiers

PMID31160620
PMCPMC6546933

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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.