Changes in lung volume
Pulmonary volumetry is a noninvasive, easy, and fast measurement technique that uses 3D reconstruction software to analyze patient CT scans and calculate each patient’s lung volume. We performed semiautomated measurements of three-dimensional lung volumes using a reconstruction software (Mimics Research 21.0), with the range of Hounsfield Unit (HU) values set from − 1024 to − 500 HU (Fig. Three-dimensional lung volumetry. Semiautomated measurements of three-dimensional lung volumes were carried out using a reconstruction software (Mimics Research 21.0), utilizing Hounsfield unit (HU) values within the range of − 1024 to 500 HU