[High-resolution computerized tomography of the lungs: bases, findings, indications]

High resolution computed tomography (HRCT) of the lungs uses thin-section CT (1- to 2-mm collimation scans) combined with a targeted reconstruction with a high-spatial frequency algorithm. HRCT is currently the most sensitive non-invasive imaging method for parenchymal and bronchoscopically inaccessible bronchial abnormalities of the lung. The following indications for HRCT of the pulmonary parenchyma are established: (1.) complementary examination in symptomatic patients with normal chest radiographs and/or normal pulmonary function testing; (2.) morphologic characterization of a nonspecific radiographic pattern; (3.) assessment of the activity and follow-up of a parenchymal disease; (4.) localization of a lung biopsy; (5.) localization of bronchiectasis.