Evidence map›Paper›PMID 34426587›Full record

ArticleScientific reports2021

A real-world demonstration of machine learning generalizability in the detection of intracranial hemorrhage on head computerized tomography.

Hojjat Salehinejad, Jumpei Kitamura, Noah Ditkofsky, Amy Lin, Aditya Bharatha, Suradech Suthiphosuwan, Hui-Ming Lin, Jefferson R Wilson, Muhammad Mamdani, Errol Colak

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 6 pooled it
5.2field-weighted citation impact, top 3% 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

30 citing papers in PubMed, 6 syntheses or guidelines pooled it, 58 citations in OpenAlex.

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  19. Stroke (Hoboken, N.J.) · 2024
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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

10 authors at 4 institutions in 1 country.

Hojjat SalehinejadLi Ka Shing Centre for Healthcare Analytics Research and Training, St. Michael's Hospital, Toronto, Canada.
Jumpei KitamuraFujisawa, Kanagawa, Japan.
Noah DitkofskyDepartment of Medical Imaging, St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.
Amy LinDepartment of Medical Imaging, St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.
Aditya BharathaLi Ka Shing Centre for Healthcare Analytics Research and Training, St. Michael's Hospital, Toronto, Canada.
Suradech SuthiphosuwanDepartment of Medical Imaging, St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.
Hui-Ming LinLi Ka Shing Centre for Healthcare Analytics Research and Training, St. Michael's Hospital, Toronto, Canada.
Jefferson R WilsonLi Ka Shing Centre for Healthcare Analytics Research and Training, St. Michael's Hospital, Toronto, Canada.
Muhammad MamdaniLi Ka Shing Centre for Healthcare Analytics Research and Training, St. Michael's Hospital, Toronto, Canada.
Errol ColakLi Ka Shing Centre for Healthcare Analytics Research and Training, St. Michael's Hospital, Toronto, Canada. errol.colak@unityhealth.to.
St. Michael's Hospital · CAUniversity of Toronto · CAPublic Health Ontario · CAUnity Health Toronto

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Machine learning (ML) holds great promise in transforming healthcare. While published studies have shown the utility of ML models in interpreting medical imaging examinations, these are often evaluated under laboratory settings. The importance of real world evaluation is best illustrated by case studies that have documented successes and failures in the translation of these models into clinical environments. A key prerequisite for the clinical adoption of these technologies is demonstrating generalizable ML model performance under real world circumstances. The purpose of this study was to demonstrate that ML model generalizability is achievable in medical imaging with the detection of intracranial hemorrhage (ICH) on non-contrast computed tomography (CT) scans serving as the use case. An ML model was trained using 21,784 scans from the RSNA Intracranial Hemorrhage CT dataset while generalizability was evaluated using an external validation dataset obtained from our busy trauma and neurosurgical center. This real world external validation dataset consisted of every unenhanced head CT scan (n = 5965) performed in our emergency department in 2019 without exclusion. The model demonstrated an AUC of 98.4%, sensitivity of 98.8%, and specificity of 98.0%, on the test dataset. On external validation, the model demonstrated an AUC of 95.4%, sensitivity of 91.3%, and specificity of 94.1%. Evaluating the ML model using a real world external validation dataset that is temporally and geographically distinct from the training dataset indicates that ML generalizability is achievable in medical imaging applications.

Indexed as

Machine LearningAdultAgedFemaleHumansIntracranial HemorrhagesMaleMiddle AgedRadiographic Image Interpretation, Computer-AssistedSensitivity and SpecificityTomography, X-Ray Computed

Identifiers

PMID34426587
PMCPMC8382750
OpenAlexW3127841358

What OpenQuestion holds

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LicenceCC BY
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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.