Evidence map›Paper›PMID 27614005›Full record

ArticleHuman brain mapping2017

Assessing neuronal density in peri-infarct cortex with PET: Effects of cortical topology and partial volume correction.

Thomas Funck, Mohammed Al-Kuwaiti, Claude Lepage, Peter Zepper, Jeffrey Minuk, Hyman M Schipper, Alan C Evans, Alexander Thiel

Open access · greenAbstract read
In one paragraph

Article in Human brain mapping, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

8 citing papers in PubMed, 12 citations in OpenAlex.

  1. Changes in synaptic density in the subacute phase after ischemic stroke: AJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Trial
  2. Article
  3. The Excessive Tonic Inhibition of the Peri-infarct Cortex Depresses Low Gamma Rhythm Power During Poststroke Recovery.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  4. Article
  5. Impaired neuronal integrity in traumatic brain injury detected byJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  6. Early-stageJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
  7. Article
  8. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Thomas FunckMontreal Neurological Institute, McGill University, Montreal, Canada.
Mohammed Al-KuwaitiMontreal Neurological Institute, McGill University, Montreal, Canada.
Claude LepageMontreal Neurological Institute, McGill University, Montreal, Canada.
Peter ZepperDepartment of Neurology, Technische Universität München, Munich, Germany.
Jeffrey MinukJewish General Hospital, Lady Davis Institute, Montreal, Canada.
Hyman M SchipperJewish General Hospital, Lady Davis Institute, Montreal, Canada.
Alan C EvansMontreal Neurological Institute, McGill University, Montreal, Canada.
Alexander ThielMontreal Neurological Institute, McGill University, Montreal, Canada.
Jewish General Hospital · CAMcGill University · CAMontreal Neurological Institute and Hospital · CATechnical University of Munich · DE

Funding

CIHR MOP-115107
6 · The paper itself

Abstract

The peri-infarct cortex (PIC) is the site of long-term physiologic changes after ischemic stroke. Traditional methods for delineating the peri-infarct gray matter (GM) have used a volumetric Euclidean distance metric to define its extent around the infarct. This metric has limitations in the case of cortical stroke, i.e., those where ischemia leads to infarction in the cortical GM, because the vascularization of the cerebral cortex follows the complex, folded topology of the cortical surface. Instead, we used a geodesic distance metric along the cortical surface to subdivide the PIC into equidistant rings emanating from the infarct border and compared this new approach to a Euclidean distance metric definition. This was done in 11 patients with [F-18]-Flumazenil ([18-F]-FMZ) positron emission tomography (PET) scans at 2 weeks post-stroke and at 6 month follow-up. FMZ is a PET radiotracer with specific binding to the alpha subunits of the type A γ-aminobutyric acid (GABAA) receptor. Additionally, we used partial-volume correction (PVC) of the PET images to compensate for potential cortical thinning and long-term neuronal loss in follow-up images. The difference in non-displaceable binding potential (BP

Indexed as

Positron-Emission TomographyAgedAged, 80 and overAnalysis of VarianceBrain InfarctionCerebral CortexFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedNervous System DiseasesNeuronsRetrospective StudiesStrokeischemic strokeneuronal densitypartial-volume effectsPETreceptor mapping

Identifiers

PMID27614005
PMCPMC6866936
OpenAlexW2520620547

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.