Emotion 16

Pulmonary CT images were obtained using scanners from GE (LightSpeed VCT, LightSpeed 16, and HiSpeed CT/i), Siemens (Definition AS+, Emotion 16, and Sensation 64), and Philips (iCT 256 and Ingenuity CT) Healthcare systems. The CT image parameters were as follows: 100–130 kVp; 47–351 mA; slice thickness, 0.6–1.25 mm; pixel spacing, 0.38–0.89 mm; reconstruction interval, 0.39–6 mm; and matrix, 512 mm × 512 mm.

The assessed CT images were the most recent CT images before surgery. All CT images in the DICOM format, without preprocessing or normalization, were considered. Chest CT images were obtained with a 16-, 64-, 128- or 256-detector row CT scanner from the following manufacturers: GE (LightSpeed 16, LightSpeed VCT, Revolution CT and Revolution RVO), Siemens (Emotion 16, Sensation 64 and SOMATON Definition AS+), Philips (iCT 256 and Ingenuity CT) and Canon (Aquilion ONE) Medical Systems. The CT image parameters were as follows: detector collimation, 0.5–0.625 mm; pitch, 0.813–1.2; gantry speed, 0.35 or 0.5 s per rotation; 120 kVp; 41–330 mA; slice thickness, 1.0–1.25 mm; and matrix, 512 × 512.

Chest CT scans used in this study were acquired from the following manufacturers using a multidetector (16-, 32-, or 64-detector row) CT scanner: GE (LightSpeed VCT, LightSpeed 16, and HiSpeed CT/I, Chicago, IL, USA), Siemens (Definition AS+, Emotion 16, and Sensation 64, Erlangen, Germany), and Philips (iCT 256 and Ingenuity CT, Amsterdam, Netherlands) Healthcare systems. The CT image parameters were as follows: detector collimation, 0.6–1.25 mm; field of view, 20–38 cm; beam pitch, 0.800–1.396; beam width, 10–40 mm; gantry speed, 0.5 or 0.8 s per rotation; 100–130 kVp; 47–351 mA; reconstruction interval, 0.39–6 mm; matrix, 512 × 512 mm².