Nguyen AH, et al. - For the assessment of the effect of geometric distortion (GD) on MRI lung volume quantification and available manual, semi-automated, and fully automated methods for lung segmentation, investigators conducted a prospective population-based cohort study which included 11 participants who went through 4 chests MRI acquisitions. Accurate, reproducible, and fast lung volume quantification was allowed by semi-automated and fully automated segmentation methods. For lung segmentation and volume quantification in large scale cohort studies, a chest MRI can become a valid radiation-free imaging modality.