During the last two decades diagnostic imaging of the pulmonary system has been improved dramatically with computed tomography (CT). Especially with high-resolution computed tomography techniques it has become possible to document the various forms of interstitial lung disease in detail. Magnetic resonance imaging (MRI) has been accepted for investigating abnormalities of the Mediastinum and of the chest wall. Magnetic resonance imaging of the lung parenchyma, however, is performed in experimental settings and is not yet used routinely in clinical practice.