Deep Learning Using Chest Radiographs to Identify High-Risk Smokers for Lung Cancer Screening Computed Tomography: Development and Validation of a Prediction Model
Open accessAbstract
Background: Lung cancer screening with chest computed tomography (CT) reduces lung cancer death. Centers for Medicare & Medicaid Services (CMS) eligibility criteria for lung cancer screening with CT require detailed smoking information and miss many incident lung cancers. An automated deep-learning approach based on chest radiograph images may identify more smokers at high risk for lung cancer who could benefit from screening with CT. Objective: To develop and validate a convolutional neural network (CXR-LC) that predicts long-term incident lung cancer using data commonly available in the electronic medical record (EMR) (chest radiograph, age, sex, and whether currently smoking). Design: Risk prediction study. Setting: U.S. lung cancer screening trials. Participants: The CXR-LC model was developed in the PLCO (Prostate, Lung, Colorectal, and Ovarian) Cancer Screening Trial (n = 41 856). The final CXR-LC model was validated in additional PLCO smokers (n = 5615, 12-year follow-up) and NLST (National Lung Screening Trial) heavy smokers (n = 5493, 6-year follow-up). Results are reported for validation data sets only. Measurements: Up to 12-year lung cancer incidence predicted by CXR-LC. Results: The CXR-LC model had better discrimination (area under the receiver-operating characteristic curve [AUC]) for incident lung cancer than CMS eligibility (PLCO AUC, 0.755 vs. 0.634; P < 0.001). The CXR-LC model's performance was similar to that of PLCOM2012, a state-of-the-art risk score with 11 inputs, in both the PLCO data set (CXR-LC AUC of 0.755 vs. PLCOM2012 AUC of 0.751) and the NLST data set (0.659 vs. 0.650). When compared in equal-sized screening populations, CXR-LC was more sensitive than CMS eligibility in the PLCO data set (74.9% vs. 63.8%; P = 0.012) and missed 30.7% fewer incident lung cancers. On decision curve analysis, CXR-LC had higher net benefit than CMS eligibility and similar benefit to PLCOM2012. Limitation: Validation in lung cancer screening trials and not a clinical setting. Conclusion: The CXR-LC model identified smokers at high risk for incident lung cancer, beyond CMS eligibility and using information commonly available in the EMR. Primary Funding Source: None.
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Deep learning can capture imaging features beyond traditional findings (e.g. enlarged heart silhouette, lung nodules) with valuable prognostic and potentially actionable information.
“the results of this and previously published studies(10–12) suggest that deep learning can capture imaging features beyond traditional findings (e.g. enlarged heart silhouette, lung nodules) with valuable prognostic and potentially actionable information.”
From Deep Learning to Estimate Cardiovascular Risk From Chest Radiographs (2024) · cites this paper as [11]
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Deep Learning to Estimate Cardiovascular Risk From Chest Radiographs
Weiss, J., Raghu, V. K., Paruchuri, K., Zinzuwadia, A., Natarajan, P., Aerts, H. J. W. L., & Lu, M. T. (2024) · Annals of Internal Medicine · doi:10.7326/m23-1898 · Cited by 50 · see citing works
Self-citationGoel, I., Bhaskar, Y., Kumar, N., Singh, S., Amanullah, M., Dhar, R., & Karmakar, S. (2025) · Frontiers in Digital Health · doi:10.3389/fdgth.2025.1550407 · Cited by 31 · see citing works
- Authors
- Lu, M. T., Raghu, V. K., Mayrhofer, T., Aerts, H. J. W. L., & Hoffmann, U.
- Affiliations
- Brigham and Women's Hospital (US)
- Harvard University (US)
- Venue
- Annals of Internal Medicine
- Publisher
- American College of Physicians
- Published
- 2020-11-03
- Volume
- 173
- Issue
- 9
- Pages
- 704-713
- ISSN
- 0003-4819 (ISSN-L)
- 1539-3704
- PMC
- PMC9200444
- OpenAlex
- W3082622980
- Cited by
- 123
- References
- 3
- Citations by year
- 2026: 8 · 2025: 22 · 2024: 29 · 2023: 28 · 2022: 20 · 2021: 14 · 2020: 2
- FWCI
- 8.85
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Annals of Internal Medicine (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Heart, Lung, and Blood Institute (T32HL076136)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
- Physical Sciences › Computer Science › Artificial Intelligence › AI in cancer detection
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiomics and Machine Learning in Medical Imaging
- Keywords
- lung cancer screening, chest radiograph, deep learning, convolutional neural networks, smoking, high-risk smokers, lung cancer risk prediction, lung cancer incidence, PLCO Cancer Screening Trial, National Lung Screening Trial, electronic health records, automated risk assessment, decision curve analysis, net benefit, lung cancer mortality reduction
- MeSH terms
- Deep Learning, Aged, Decision Support Techniques, Female, Humans, Lung, Lung Neoplasms, Male, Middle Aged, Risk Factors, Sensitivity and Specificity, Smoking, Tomography, X-Ray Computed, Risk Assessment, Early Detection of Cancer
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