Evidence map›Paper›PMID 35606655›Full record

ArticleNeuroradiology2022

Validation of a machine learning software tool for automated large vessel occlusion detection in patients with suspected acute stroke.

Petra Cimflova, Rotem Golan, Johanna M Ospel, Alireza Sojoudi, Chris Duszynski, Ibukun Elebute, Houssam El-Hariri, Seyed Hossein Mousavi, Luis A Souto Maior Neto, Najratun Pinky and 7 more

Abstract read
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In one paragraph

Article in Neuroradiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

5 citing papers in PubMed, 8 citations in OpenAlex.

  1. Observational
  2. Review
  3. Article
  4. Article
  5. Review
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

17 authors at 2 institutions in 3 countries.

Petra Cimflova *Department of Clinical Neurosciences and Radiology, Cumming School of Medicine, Foothills Medical Centre, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada. petracimflova@gmail.com.ORCID http://orcid.org/0000-0001-8058-383X
Rotem Golan *Circle Neurovascular Imaging Inc., Calgary, AB, Canada.ORCID http://orcid.org/0000-0002-5756-9156
Johanna M OspelDepartment of Radiology, Cumming School of Medicine, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.ORCID http://orcid.org/0000-0003-0029-6764
Alireza SojoudiCircle Neurovascular Imaging Inc., Calgary, AB, Canada.ORCID http://orcid.org/0000-0002-2727-8091
Chris DuszynskiCircle Neurovascular Imaging Inc., Calgary, AB, Canada.ORCID http://orcid.org/0000-0001-5050-3608
Ibukun ElebuteCircle Neurovascular Imaging Inc., Calgary, AB, Canada.
Houssam El-HaririCircle Neurovascular Imaging Inc., Calgary, AB, Canada.ORCID http://orcid.org/0000-0002-0841-3796
Seyed Hossein MousaviCircle Neurovascular Imaging Inc., Calgary, AB, Canada.
Luis A Souto Maior NetoCircle Neurovascular Imaging Inc., Calgary, AB, Canada.ORCID http://orcid.org/0000-0003-4437-6176
Najratun PinkyCircle Neurovascular Imaging Inc., Calgary, AB, Canada.
Benjamin BelandDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.ORCID http://orcid.org/0000-0002-9574-1412
Fouzi BalaDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.ORCID http://orcid.org/0000-0001-6748-2081
Nima R KashaniDepartment of Radiology, Cumming School of Medicine, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.ORCID http://orcid.org/0000-0002-9752-784X
William HuDepartment of Radiology, Cumming School of Medicine, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.
Manish JoshiDepartment of Radiology, Cumming School of Medicine, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.
Wu QiuDepartment of Clinical Neurosciences and Radiology, Cumming School of Medicine, Foothills Medical Centre, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.ORCID http://orcid.org/0000-0001-7827-8270
Bijoy K MenonDepartment of Clinical Neurosciences and Radiology, Cumming School of Medicine, Foothills Medical Centre, University of Calgary, 1403 29th Street NW, Calgary, AB, T2N 2T9, Canada.ORCID http://orcid.org/0000-0002-3466-496X
University of Calgary · CACircle Cardiovascular Imaging · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeCT angiography (CTA) is the imaging standard for large vessel occlusion (LVO) detection in patients with acute ischemic stroke. StrokeSENS LVO is an automated tool that utilizes a machine learning algorithm to identify anterior large vessel occlusions (LVO) on CTA. The aim of this study was to test the algorithm's performance in LVO detection in an independent dataset.

methodsA total of 400 studies (217 LVO, 183 other/no occlusion) read by expert consensus were used for retrospective analysis. The LVO was defined as intracranial internal carotid artery (ICA) occlusion and M1 middle cerebral artery (MCA) occlusion. Software performance in detecting anterior LVO was evaluated using receiver operator characteristics (ROC) analysis, reporting area under the curve (AUC), sensitivity, and specificity. Subgroup analyses were performed to evaluate if performance in detecting LVO differed by subgroups, namely M1 MCA and ICA occlusion sites, and in data stratified by patient age, sex, and CTA acquisition characteristics (slice thickness, kilovoltage tube peak, and scanner manufacturer).

resultsAUC, sensitivity, and specificity overall were as follows: 0.939, 0.894, and 0.874, respectively, in the full cohort; 0.927, 0.857, and 0.874, respectively, in the ICA occlusion cohort; 0.945, 0.914, and 0.874, respectively, in the M1 MCA occlusion cohort. Performance did not differ significantly by patient age, sex, or CTA acquisition characteristics.

conclusionThe StrokeSENS LVO machine learning algorithm detects anterior LVO with high accuracy from a range of scans in a large dataset.

Indexed as

Arterial Occlusive DiseasesBrain IschemiaIschemic StrokeStrokeComputed Tomography AngiographyHumansInfarction, Middle Cerebral ArteryMachine LearningRetrospective StudiesSoftwareAutomatic detectionLarge vessel occlusionMachine learningStroke

Identifiers

PMID35606655
OpenAlexW4281393254

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.