Evidence map›Paper›PMID 33527886›Full record

ArticleInternational journal of stroke : official journal of the International Stroke Society2022

Diagnostic accuracy of automated occlusion detection in CT angiography using e-CTA.

Fatih Seker, Johannes Alex Rolf Pfaff, Yahia Mokli, Anne Berberich, Rafael Namias, Steven Gerry, Simon Nagel, Martin Bendszus, Christian Herweh

Open access · bronzeAbstract read
In one paragraph

Article in International journal of stroke : official journal of the International Stroke Society, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 7% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Cerebrovascular morphology: Insights into normal variations, aging effects and disease implications.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2025
    Review
  8. Article
  9. Automated CT angiography collateral scoring in anterior large vessel occlusion stroke: A multireader study.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025
    Article
  10. The e-STROKE Study: The Design of a Prospective Observational Multicentral Study.Journal of cardiovascular development and disease · 2025
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Accuracy of artificial intelligence software for CT angiography in stroke.Annals of clinical and translational neurology · 2023
    Article
  17. Article
  18. Article
  19. Article
  20. 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

9 authors at 2 institutions in 2 countries.

Fatih SekerDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.ORCID 0000-0001-6072-0438
Johannes Alex Rolf PfaffDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.ORCID 0000-0003-0672-5718
Yahia MokliDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.ORCID 0000-0002-7587-9684
Anne BerberichDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.ORCID 0000-0002-6991-1334
Rafael NamiasBainomix Ltd., Oxford, UK.
Steven GerryCentre for Statistics in Medicine, University of Oxford, Oxford, UK.
Simon NagelDepartment of Neurology, Heidelberg University Hospital, Heidelberg, Germany.ORCID 0000-0003-2471-6647
Martin BendszusDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
Christian HerwehDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
Heidelberg University · DEUniversity of Oxford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimThe aim of this study was to assess the diagnostic accuracy of e-CTA (product name) (Brainomix) in the automatic detection of large vessel occlusions in anterior circulation stroke.

methodsOf 487 CT angiographies from patients with large vessel occlusions stroke, 327 were used to train the algorithm while the remaining cases together with 140 negative CT angiographies were used to validate its performance against ground truth. Of these 301 cases, 144 were randomly selected and used for an additional comparative analysis against 4 raters. Sensitivity, specificity, positive and negative predictive value (PPV and NPV), accuracy and level of agreement with ground truth (Cohen's Kappa) were determined and compared to the performance of a neuroradiologist, a radiology resident, and two neurology residents.

resultse-CTA had a sensitivity and specificity of 0.84 (0.77-0.89) and 0.96 (0.91-0.98) respectively for the detection of any large vessel occlusions on the correct side in the whole validation cohort. This performance was identical in the comparative analysis subgroup and was within the range of physicians at different levels of expertise: 0.86-0.97 and 0.91-1.00, respectively. For the detection of proximal occlusions, it was 0.92 (0.84-0.96) and 0.98 (0.94-1.00) for the whole cohort and 0.93 (0.80-0.98) and 1.00 (0.95-1.00) for the comparative analysis, respectively for e-CTA. The range was 0.8-0.97 for sensitivity and 0.97-1.00 for specificity for the four physicians.

conclusionsThe performance of e-CTA in detecting any large vessel occlusions is comparable to less experienced physicians but is similar to experienced physicians for detecting proximal large vessel occlusions.

Indexed as

Computed Tomography AngiographyStrokeCerebral AngiographyHumansPredictive Value of TestsSensitivity and SpecificityArtificial intelligenceCT angiographyCT scanischemic strokelarge vessel occlusionradiology

Identifiers

PMID33527886
PMCPMC8739618
OpenAlexW3129088433

What OpenQuestion holds

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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.