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Record W3201847771 · doi:10.18231/j.ijn.2021.045

DWI and NCCT - Ischemic patterns in global anoxic brain injury

2021· article· en· W3201847771 on OpenAlexaff
Moiz Hafeez

Bibliographic record

VenueIP Indian Journal of Neurosciences · 2021
Typearticle
Languageen
FieldMedicine
TopicTraumatic Brain Injury and Neurovascular Disturbances
Canadian institutionsMcMaster UniversityUniversity of Calgary
Fundersnot available
KeywordsHyperintensityMedicineIschemiaMagnetic resonance imagingDiffusion MRIWhite matterGlobus pallidusParenchymaRadiologyCardiologyPathologyInternal medicineBasal gangliaCentral nervous system

Abstract

fetched live from OpenAlex

This case report highlights differences between diffusion weighted imaging (DWI) and computed tomography (CT) with respect to the extent of ischemic changes detectable in brain parenchyma during global anoxic brain injury. Brain CT in a 65 year old patient post cardiac arrest showed striking diffuse loss of Gray-White matter differentiation consistent with global anoxic brain injury while magnetic resonance imaging (MRI) performed 3 days later showed diffusion restriction and hyperintensity only in select areas. DWI hyperintensity was seen in diverse structures including the hippocampi, globus pallidus, forniceal columns, medial occipital lobes as well as the left amygdala. Although generally presumed to be the most sensitive modality for detecting parenchymal ischemia, this case demonstrates that CT may sometimes better capture the extent of parenchymal damage during anoxic brain injury.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.008

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.002
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.002
Science and technology studies0.0010.001
Scholarly communication0.0010.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0020.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.020
GPT teacher head0.293
Teacher spread0.273 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2021
Admission routes1
Has abstractyes

Explore more

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