Evidence map›Paper›PMID 32941770›Full record

ArticleThe British journal of radiology2020

Defining reperfusion post endovascular therapy in ischemic stroke using MR-dynamic contrast enhanced perfusion.

Christopher D d'Esterre, Rani Gupta Sah, Zarina Assis, Aron S Talai, Andrew M Demchuk, Michael D Hill, Mayank Goyal, Ting-Yim Lee, Nils D Forkert, Philip A Barber

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The British journal of radiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 39% 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

2 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. Observational
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

10 authors at 3 institutions in 1 country.

Christopher D d'EsterreDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Rani Gupta SahDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Zarina AssisDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Aron S TalaiDepartment of Radiology, University of Calgary, Calgary, AB, Canada.
Andrew M DemchukDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Michael D HillDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Mayank GoyalDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Ting-Yim LeeDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
Nils D ForkertDepartment of Radiology, University of Calgary, Calgary, AB, Canada.
Philip A BarberDepartment of Clinical Neurosciences, Calgary Stroke Program, Calgary, Canada.
University of Calgary · CAFoothills Medical Centre · CALawson Health Research Institute · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesCerebral blood flow (CBF) measurements after endovascular therapy (EVT) for acute ischemic stroke are important to distinguish early secondary injury related to persisting ischemia from that related to reperfusion when considering clinical response and infarct growth.

methodsWe compare reperfusion quantified by the modified Thrombolysis in Cerebral Infarction Score (mTICI) with perfusion measured by MRI dynamic contrast-enhanced perfusion within 5 h of EVT anterior circulation stroke. MR perfusion (rCBF, rCBV, rTmax, rT0) and mTICI scores were included in a predictive model for change in NIHSS at 24 h and diffusion-weighted imaging (DWI) lesion growth (acute to 24 h MRI) using a machine learning RRELIEFF feature selection coupled with a support vector regression.

resultsFor all perfusion parameters, mean values within the acute infarct for the TICI-2b group (considered clinically good reperfusion) were not significantly different from those in the mTICI <2b (clinically poor reperfusion). However, there was a statistically significant difference in perfusion values within the acute infarct region of interest between the mTICI-3 group

conclusionMR perfusion following EVT provides accurate physiological approach to understanding the relationship of CBF, clinical outcome, and DWI growth. ADVANCES IN KNOWLEDGE: MR perfusion CBF acquired is a robust, objective reperfusion measurement providing following recanalization of the target occlusion which is critical to distinguish potential therapeutic harm from the failed technical success of EVT as well as improve the responsiveness of clinical trial outcomes to disease modification.

Indexed as

Cerebrovascular CirculationDiffusion Magnetic Resonance ImagingEndovascular ProceduresAdultAgedAged, 80 and overBrain IschemiaContrast MediaFemaleHumansMaleMiddle AgedPostoperative PeriodProspective StudiesReperfusionStrokeContrast Media

Identifiers

PMID32941770
PMCPMC7716013
OpenAlexW3087318558

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.