NSCLC CT Imaging Characteristics

All patients were examined using Aquilion ONE 320 slice CT (Toshiba, Japan) and 64-MDCT scanner (GE, USA). The CT scanning parameters included a tube voltage of 100 to 130 kV. Entire lung volume from the apices to the pleural recesses and reconstructed with a slice thickness ranging 0.625 mm at end-inspiration in the craniocaudal direction, All captured images were reconstructed with a sharp high kernel and were displayed with standard lung (width, 1600 HU; level, −600 HU) and standard mediastinal window settings (width, 400 HU; level, 40 HU). At the same time, we collected 12 CT-semantic labels of NSCLC patients, including internal signs (density, necrosis, cavitation, vacuolar sign, cavity sign, and calcification) and marginal signs (spicule sign, lobulation sign, spinous protuberant sign, vascular-bronchial convergent sign, and pleural indentation sign).