Skip to content

Quantitative Imaging Laboratory

Refer a Patient

About Us

The Quantitative Imaging Laboratory (QIL) at National Jewish Health (NJH), directed by Stephen Humphries PhD and David Lynch MB, focuses on development and application of the latest medical image analysis methods in clinical and translational research. The QIL was established in 2008 to support radiologic imaging in the COPDGene research study and provide image archival and analysis for the NJH Department of Radiology. Today, the QIL’s main goal is to develop and apply novel quantitative image analysis methods, including those based on Artificial Intelligence (AI), that have meaningful clinical impact.

The QIL also provides quality assurance and image data management and is currently the primary image analysis core for local, national and international multicenter imaging research studies including: COPDGene, which includes 10,000 patients and nearly 20,000 CT exams, and the Pulmonary Fibrosis Foundation Registry which aims to create an imaging directory consisting of CT images of over 1,000 subjects.


Research Activities

The QIL develops novel techniques to recognize and characterize normal and abnormal anatomy, researches methods for efficient large-scale processing of medical images and provides quantitative image analysis for research and clinical purposes. The QIL is actively engaged in research on deep learning, a class of AI algorithms that use multi-layer computer models called neural networks to “learn” from example data rather than being explicitly programmed.

Lung Fibrosis Quantification on CT

Fibrosis images

Researchers in the QIL have developed deep learning programs that are capable of automatic detection and quantification of pulmonary fibrosis on CT scans. The Data-Driven Texture Analysis (DTA) algorithm developed by the QIL correlates with radiologist visual assessment and pulmonary function, is sensitive to change in extent of fibrosis, and can predict survival. Quantitative analysis of lung fibrosis has been applied in multiple completed and ongoing clinical trials of treatment in fibrotic lung disease.

Quantitative Analysis of Sinus CT

CT scan of sinus

The QIL has developed deep learning methods for automatic 3D segmentation of the nasal sinuses on CT scans. This enables quantitative assessment of sinus volumes and the extent of sinus opacification as a marker of sinusitis. Recent research indicates a correlation between CT sinusitis scores and asthma diagnosis, eosinophil count and pulmonary function. Support from the State of Colorado has facilitated QIL research and participation in a multicenter trial for severe nasal polyposis.

Quantitative Analysis of COPD and Smoking Related Disease on CT

CT scan of lungs and smoking damage

The QIL is the imaging core for the COPDGene study; imaging in COPDGene has resulted in over 100 publications and several important advances, summarized in a recent review article by Bhatt et al. The QIL has been particularly interested in the role of CT in classifying emphysema, and in the potential of deep learning to assist with this task. Emphysema pattern has been shown to be an important indicator of disease severity but is time consuming and subjective to perform visually. The QIL has developed a deep learning algorithm to automatically score emphysema severity pattern on CT according to a classification system developed by the Fleischner Society. Further research includes quantitative phenotyping of emphysema, air trapping, and airway analysis.

QIL Collaborators



Stephen M. Humphries, PhD, Director and Imaging Scientist

Associate Professor in the Department of Radiology at National Jewish Health, is a medical physicist and imaging scientist with a major interest in quantitative CT of fibrotic and obstructive diffuse lung diseases.

As the Director of the Quantitative Imaging Laboratory at National Jewish Health, Dr. Humphries oversees all laboratory efforts including quality assurance, storage, and image analysis for multi-center CT studies of COPD, pulmonary fibrosis and rhinosinusitis.


David Lynch, MD, Medical Director

Professor of Radiology at National Jewish Health, principal radiology investigator for the imaging core of COPDGene (which has enrolled over 10,000 individuals with and without COPD, now followed for over 10 years), and IPFNet. He has authored or coauthored over 300 papers and several books on lung imaging, He is Past President of the Society of Thoracic Radiology and of the Fleischner Society.


Alex Kluiber, QIL Operations Manager

Kyle Wessel, Operations Engineer

Lucas Veitel, QIL Quality Project Coordinator

Aleena Notary, Research Software Engineer

Devlin Thieke, Research Software Engineer

Stephanie Clancy, Administrative Assistant

Resources & Services

The QIL utilizes a variety of software to view and analyze radiologic images including proprietary software developed in the lab.

Learn about our Lab Services.


Contact Information

Attn: Quantitative Imaging Lab
National Jewish Health
1400 Jackson Street, Rm F107
Denver, CO 80206

Phone: 303.270.2529
Fax: 303.270.2538


View all Publications

Barnes H, Humphries SM, George PM, Assayag D, Glaspole I, Mackintosh JA, Corte TJ, Glassberg M, Johannson KA, Calandriello L, Felder F, Wells A, Walsh S. Machine learning in radiology: the new frontier in interstitial lung diseases. Lancet Digit Health. 2023 Jan;5(1):e41-e50. doi: 10.1016/S2589-7500(22)00230-8. Epub 2022 Dec 12. PMID: 36517410.
Humphries SM, Mackintosh JA, Jo HE, Walsh SLF, Silva M, Calandriello L, Chapman S, Ellis S, Glaspole I, Goh N, Grainge C, Hopkins PMA, Keir GJ, Moodley Y, Reynolds PN, Walters EH, Baraghoshi D, Wells AU, Lynch DA, Corte TJ. Quantitative computed tomography predicts outcomes in idiopathic pulmonary fibrosis. Respirology. 2022 Dec;27(12):1045-1053. doi: 10.1111/resp.14333. Epub 2022 Jul 25. PMID: 35875881; PMCID: PMC9796832.
Steele MP, Peljto AL, Mathai SK, Humphries S, Bang TJ, Oh A, Teague S, Cicchetti G, Sigakis C, Kropski JA, Loyd JE, Blackwell TS, Brown KK, Schwarz MI, Warren RA, Powers J, Walts AD, Markin C, Fingerlin TE, Yang IV, Lynch DA, Lee JS, Schwartz DA. Incidence and Progression of Fibrotic Lung Disease in an At-Risk Cohort. Am J Respir Crit Care Med. 2022 Sep 12. doi: 10.1164/rccm.202206-1075OC. Epub ahead of print. PMID: 36094461.
Massey CJ, Ramos L, Beswick DM, Ramakrishnan VR, Humphries SM. Clinical Validation and Extension of an Automated, Deep Learning-Based Algorithm for Quantitative Sinus CT Analysis. AJNR Am J Neuroradiol. 2022 Sep;43(9):1318-1324. doi: 10.3174/ajnr.A7616. PMID: 36538385; PMCID: PMC9451634.
Oh AS, Baraghoshi D, Lynch DA, Ash SY, Crapo JD, Humphries SM; COPDGene Investigators. Emphysema Progression at CT by Deep Learning Predicts Functional Impairment and Mortality: Results from the COPDGene Study. Radiology. 2022 Sep;304(3):672-679. doi: 10.1148/radiol.213054. Epub 2022 May 17. PMID: 35579519; PMCID: PMC9434819.