A new peer-reviewed study published in Respiratory Research confirms that 4DMedical’s CT Lung Ventilation Analysis Software (CT LVAS) provides results comparable to those of the gold standard PET method, as well as two additional research techniques for assessing regional lung function. The findings demonstrate a strong association and agreement between 4DMedical’s CT LVAS and PET-ventilation at the lobar level and comparable correlation at the voxel level. Utilizing routine non-contrast CT scans, CT LVAS generates detailed regional ventilation information. This highlights CT LVAS as a safe and contrast-free modality for functional lung imaging, making it an ideal tool for assessing lung function across a range of respiratory conditions.