TABLE 1

Studies comparing plethysmography and computed tomography (CT)-derived lung volumes

First author [ref.]Patients nCOPD nFEV1#CT modules+Spirometry gatedSoftwareTLC R2RV R2VC R2
Tantucci [10]37201.16±0.63 L (46.9±20.6%)OneYesAquarius iNtuition, TeraRecon Inc. (Foster City, CA, USA)0.97
Garfield [11]59591.08±0.52 L (41±18%)MultipleNoPulmonary Workstation Plus, VIDA Diagnostics, Inc. (Coralville, IA, USA)0.92
Becker [12]2828Pre: 22±1%; post: 29±2%OneNoCustom Visual C ++ (Microsoft; Redmond, WA, USA)0.90.840.48
Coxson [13]57570.84±0.23 L (all ≤45%)MultipleNoCustom (EmphylxJ; Vancouver, BC, Canada)0.79
Matsumoto [14]11846multipleNoSemi-automated ‘Computer Aided Lung Informatics for Pathology Evaluation and Rating’ CALIPER0.96
Brown [15]486486MultipleNoAutomated three-dimensional technique (no further information given)0.860.67
Kauczor [16]7225OneNoAllegro workstation (ISG Technologies; Mississauga, ON, Canada)0.890.810.7
Zaporozhan [17]313135±11%OneNoCustom (YACTA; Mainz, Germany)0.90.83
Brown [18]434MultipleNoCustom (detailed description of algorithm provided)0.91
Song [19]1721720.767±0.213 L (27.9±4.6%)OneNoPULMO3D software (v3.7.1, Fraunhofer MEVIS; Bremen, Germany)0.810.66

Patients not included in the COPD group suffer from other pulmonary diseases. FEV1: forced expiratory volume in 1 s; TLC: total lung capacity; RV: residual volume; VC: vital capacity. #: FEV1 data were not always available or not available for the COPD group specifically; : pre and post refer to preoperative and postoperative, respectively; +: a set of parameters for a CT scan.