[Magnetic resonance imaging of the respiratory airways and the pulmonary parenchyma].

In the study of the proximal airways, MRI is mainly appropriate for the trachea and the mainstem bronchi, in case of tracheal stenosis or tumors. CT remains the reference examination for the distal airways. In alveolar condensation, MRI may help differentiating some of the involved materials (blood, lipids). Lastly, the role of MRI is limited in interstitial pathology, even though some indications may be appearing: fibrosis following radiation therapy, determination of the inflammatory component.