Expiratory CT scan: When to do it and how to interpret it

Radiologia (Engl Ed). 2023 Jul-Aug;65(4):352-361. doi: 10.1016/j.rxeng.2023.01.008. Epub 2023 Jul 12.ABSTRACTExpiratory CT scan is a complementary technique of inspiratory CT that provide valuable physiological information and may be more sensitive to detect air trapping than pul-monary function tests. It is useful in many obstructive airway diseases, including obliterative bronchiolitis, asthma, Swyer-James syndrome, tracheomalacia, hypersensitivity pneumonitis and sarcoidosis. In obliterative bronchiolitis, expiratory CT scan may be the only imaging technique that shows abnormalities in the early phase of disease. In order to obtain a good quality study, we should explain the procedure to the patient, use precise instructions and do some practice before image acquisition. Here we describe strategies to optimize the techni-que and propose an algorithm that help in interpretation of imaging findings in patients with obstructive airway disease.PMID:37516488 | DOI:10.1016/j.rxeng.2023.01.008

Source: Radiologia - July 29, 2023 Category: Radiology Authors: A Mart ínez de Alegría Alonso A Berm údez Naveira D Uceda Navarro M Dom ínguez Robla Source Type: research