4DMedical’s flagship CT:VQ™ delivers contrast-free ventilation and perfusion imaging from the CT lung scan you’re already ordering. Get quantitative regional and lobar insight from a routine CT exam—see it for yourself at ATS 2026.
View the entire 4DMedical portfolio.
CT:VQ™ is an FDA-cleared, non-contrast software solution that transforms routine chest CT scans into quantitative ventilation and perfusion maps, providing pulmonologists with rapid, anatomically aligned functional insights without requiring changes to scanning protocols or reliance on nuclear medicine availability.
Speakers:
Joseph Mammarappallil, MD (Duke University) | Matt Tucker, CCO
Learn how CT:VQ™ will reshape pulmonary care pathways—from PE evaluation to small airway disease, COPD outcomes, pneumothorax management, and collateral ventilation assessment. Gain clinician-led perspectives into the future of functional CT in real world practice.
Speakers:
Prof. Andreas Fouras, CEO | Michael Lester, MD (Vanderbilt) | Mehul Gilani, MD (UPMC)
This study looked at whether long-term exposure to air pollution is linked to damage in the lung blood vessels of smokers and former smokers with COPD.
The main finding was that higher long-term exposure to nitrogen dioxide and ozone was linked to more loss of small lung blood vessels in people with severe COPD, but not in milder disease.
Poster 709
Product: IQ-UIP (Early IPF Identification)
“Comparing Survival Outcomes Between Radiomic UIP and Visual UIP Classification in Fibrotic ILD”
9:15–11:15am
Room W314 (Level III, OCCC West Concourse)
Poster 502
Product: LDAi (Lung Density Analysis)
2:15–4:15pm
West F3 (Level II, OCCC West Concourse)
Poster 801
Product: CT LVAS + LDAf (Lung Density Analysis)
9:15–11:15am
W315 (Level III, OCCC West Concourse)
Poster P364
Product: XV LVAS (Lung Ventilation Analysis)
“Association Between Regional Ventilation Heterogeneity by X-ray Velocimetry and Asthma Control”
11:30am–1:15pm
Area B, Halls WA2-WA3 (Levell II, OCCC West Concourse)
Poster P362
Product: CT:VQ (Non-contrast Ventilation & Perfusion)
11:30am–1:15pm
Area B, Halls WA2-WA3 (Levell II, OCCC West Concourse)
Poster P356
Product: CT:VQ (Non-contrast Ventilation & Perfusion)
“Reader Study Performance Assessment of Perfusion With CT:VQ Software: Comparison to Spect VQ”
11:30am–1:15pm
Area B, Halls WA2-WA3 (Levell II, OCCC West Concourse)
Poster P355
Product: CT:VQ (Non-contrast Ventilation & Perfusion)
11:30am–1:15pm
Area B, Halls WA2-WA3 (Levell II, OCCC West Concourse)
Poster 620
Product: LDAi (Lung Density Analysis)
2:15–4:15pm
W303 (Level III, OCCC West Concourse)
Poster 619
Product: CT:VQ (Non-contrast Ventilation & Perfusion)
2:15–4:15pm
W303 (Level III, OCCC West Concourse)
Poster 908
Product: CT:VQ (Non-contrast Ventilation & Perfusion)
“Automatic Pulmonary Embolism Detection From Paired Non-contrast CT Ventilation/perfusion (CT:VQ)”
11:00am–1:00pm
W414AB (Level IV, OCCC West Concourse)
Poster 906
Product: CT:VQ (Non-contrast Ventilation & Perfusion)
“CT:VQ Software Performance Validation Against Spect V/Q and Pulmonary Function Tests”
11:00am–1:00pm
W414AB (Level IV, OCCC West Concourse)
CT:VQ—A Contrast-Free Breakthrough in Regional Pulmonary Ventilation and Perfusion Imaging
Ventilation-perfusion (V/Q) imaging is foundational for evaluating pulmonary physiology across a wide spectrum of diseases-from pulmonary embolism and COPD to lung volume reduction interventions. For decades, clinical V/Q assessment has relied almost exclusively on nuclear medicine imaging, most commonly single-photon emission computed tomography (SPECT). While widely used, SPECT requires radiotracers, introduces logistic and operational burdens, and provides relatively low spatial resolution.
