Evidence map›Paper›PMID 33658025›Full record

ArticleBMC medicine2021

Automated detection of lung nodules and coronary artery calcium using artificial intelligence on low-dose CT scans for lung cancer screening: accuracy and prognostic value.

Jordan Chamberlin, Madison R Kocher, Jeffrey Waltz, Madalyn Snoddy, Natalie F C Stringer, Joseph Stephenson, Pooyan Sahbaee, Puneet Sharma, Saikiran Rapaka, U Joseph Schoepf and 7 more

Open access · goldAbstract read
In one paragraph

Article in BMC medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 5 pooled it
13.5field-weighted citation impact, top 1% 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

73 citing papers in PubMed, 5 syntheses or guidelines pooled it, 135 citations in OpenAlex.

  1. Pooled it
  2. Application of artificial intelligence in laryngeal lesions: a systematic review and meta-analysis.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
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  10. Current trends and future directions of artificial intelligence in lung cancer diagnosis.Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2026
    Article
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  20. Incidental Pulmonary Nodules: What Should We Do in 2026?Respiration; international review of thoracic diseases · 2026
    Review

13 more citing papers are in PubMed but not listed here.

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 1 country.

Jordan ChamberlinDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Madison R KocherDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Jeffrey WaltzDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Madalyn SnoddyDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Natalie F C StringerDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Joseph StephensonDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Pooyan SahbaeeSiemens Healthineers, Princeton, NJ, USA.
Puneet SharmaSiemens Healthineers, Princeton, NJ, USA.
Saikiran RapakaSiemens Healthineers, Princeton, NJ, USA.
U Joseph SchoepfDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Andres F AbadiaDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Jonathan SperlSiemens Healthineers, Princeton, NJ, USA.
Phillip HoelzerSiemens Healthineers, Princeton, NJ, USA.
Megan MercerDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Nayana SomayajiDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Gilberto AquinoDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA.
Jeremy R BurtDepartment of Radiology, Medical University of South Carolina, Charleston, SC, 29403, USA. burtje@musc.edu.ORCID 0000-0003-4169-1015
Medical University of South Carolina · USSiemens (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundArtificial intelligence (AI) in diagnostic radiology is undergoing rapid development. Its potential utility to improve diagnostic performance for cardiopulmonary events is widely recognized, but the accuracy and precision have yet to be demonstrated in the context of current screening modalities. Here, we present findings on the performance of an AI convolutional neural network (CNN) prototype (AI-RAD Companion, Siemens Healthineers) that automatically detects pulmonary nodules and quantifies coronary artery calcium volume (CACV) on low-dose chest CT (LDCT), and compare results to expert radiologists. We also correlate AI findings with adverse cardiopulmonary outcomes in a retrospective cohort of 117 patients who underwent LDCT.

methodsA total of 117 patients were enrolled in this study. Two CNNs were used to identify lung nodules and CACV on LDCT scans. All subjects were used for lung nodule analysis, and 96 subjects met the criteria for coronary artery calcium volume analysis. Interobserver concordance was measured using ICC and Cohen's kappa. Multivariate logistic regression and partial least squares regression were used for outcomes analysis.

resultsAgreement of the AI findings with experts was excellent (CACV ICC = 0.904, lung nodules Cohen's kappa = 0.846) with high sensitivity and specificity (CACV: sensitivity = .929, specificity = .960; lung nodules: sensitivity = 1, specificity = 0.708). The AI findings improved the prediction of major cardiopulmonary outcomes at 1-year follow-up including major adverse cardiac events and lung cancer (AUC

conclusionWe conclude the AI prototype rapidly and accurately identifies significant risk factors for cardiopulmonary disease on standard screening low-dose chest CT. This information can be used to improve diagnostic ability, facilitate intervention, improve morbidity and mortality, and decrease healthcare costs. There is also potential application in countries with limited numbers of cardiothoracic radiologists.

Indexed as

Artificial IntelligenceCalciumCohort StudiesCoronary VesselsEarly Detection of CancerFemaleHumansLung NeoplasmsMalePrognosisRetrospective StudiesTomography, X-Ray ComputedCalciumArtificial intelligenceCardiothoracic imagingConvolutional neural networksCoronary artery diseaseDeep learningLung cancer screening

Identifiers

PMID33658025
PMCPMC7931546
OpenAlexW3134305302

What OpenQuestion holds

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LicenceCC BY
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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.