Evidence map›Paper›PMID 35348859›Full record

ArticleEuropean radiology2022

Non-contrast CT markers of intracerebral hematoma expansion: a reliability study.

Ahmad Nehme, Célina Ducroux, Marie-Andrée Panzini, Céline Bard, Olena Bereznyakova, William Boisseau, Yan Deschaintre, Jose Danilo Bengzon Diestro, François Guilbert, Grégory Jacquin and 10 more

Abstract read
PubMed Publisher
In one paragraph

Article in European radiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.2field-weighted citation impact, top 11% 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

13 citing papers in PubMed, 19 citations in OpenAlex.

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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

20 authors at 1 institution in 1 country.

Ahmad NehmeNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada. Ahmad.nehme@umontreal.ca.ORCID http://orcid.org/0000-0002-7700-6799
Célina DucrouxNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Marie-Andrée PanziniNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Céline BardDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Olena BereznyakovaNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
William BoisseauDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Yan DeschaintreNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Jose Danilo Bengzon DiestroDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
François GuilbertDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Grégory JacquinNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Mohamed Taoubane MaallahDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Kristoff NelsonDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Igor Gomes PadilhaDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Alexandre Y PoppeNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Bastien RiouxNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Daniel RoyDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Lahoud ToumaNeurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Alain WeillDépartement de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Laura C Gioia *Neurovascular Health Program, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Laurent Létourneau-Guillon *Département de Radiologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.
Centre Hospitalier de l’Université de Montréal · CA

Funding

Fonds de Recherche du Québec - Santé 299979Radiological Society of North America RSD2122
6 · The paper itself

Abstract

objectivesWe evaluated whether clinicians agree in the detection of non-contrast CT markers of intracerebral hemorrhage (ICH) expansion.

methodsFrom our local dataset, we randomly sampled 60 patients diagnosed with spontaneous ICH. Fifteen physicians and trainees (Stroke Neurology, Interventional and Diagnostic Neuroradiology) were trained to identify six density (Barras density, black hole, blend, hypodensity, fluid level, swirl) and three shape (Barras shape, island, satellite) expansion markers, using standardized definitions. Thirteen raters performed a second assessment. Inter- and intra-rater agreement were measured using Gwet's AC

resultsAlmost perfect inter-rater agreement was observed for the swirl (0.85, 95% CI: 0.78-0.90) and fluid level (0.84, 95% CI: 0.76-0.90) markers, while the hypodensity (0.67, 95% CI: 0.56-0.76) and blend (0.62, 95% CI: 0.51-0.71) markers showed substantial agreement. Inter-rater agreement was otherwise moderate, and comparable between density and shape markers. Inter-rater agreement was lower for the three markers that require the rater to identify one specific axial slice (Barras density, Barras shape, island: 0.46, 95% CI: 0.40-0.52 versus others: 0.60, 95% CI: 0.56-0.63). Inter-observer agreement did not differ when stratified for raters' experience, hematoma location, volume, or anticoagulation status. Intra-rater agreement was substantial to almost perfect for all but the black hole marker.

conclusionIn a large sample of raters with different backgrounds and expertise levels, only four of nine non-contrast CT markers of ICH expansion showed substantial to almost perfect inter-rater agreement. KEY POINTS: • In a sample of 15 raters and 60 patients, only four of nine non-contrast CT markers of ICH expansion showed substantial to almost perfect inter-rater agreement (Gwet's AC

Indexed as

Cerebral HemorrhageStrokeBiomarkersHematomaHumansObserver VariationReproducibility of ResultsTomography, X-Ray ComputedBiomarkersCerebral hemorrhageHumansObserver variationTomography, X-ray computed

Identifiers

PMID35348859
OpenAlexW4220890555

What OpenQuestion holds

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Registered trials

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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.