Is 3D Modeling From Non-contrast CT Accurate for Minimally Invasive Lung Segmentectomies ?

Inclusion Criteria: * Adult patient ≥ 18 years * Patient agreeing to participate in the study * Patient with clinical stage IA lung lesions ≤ 2 cm in diameter AND a suspected or proven malignancy. * Chest CT scan available without and then with contrast * Eligible for VATS or RATS segmentectomy based on respiratory explorations Exclusion Criteria: * Patient refusal to participate in the study * Allergic reactions to radiographic contrast agents * History of ipsilateral cardiothoracic surgery * Open segmentectomy (thoracotomy) * Histology different from that of NSCLC * Inability to provide the subject with informed information (difficulty understanding the subject, insufficient command of French, etc.) * Pregnant or breastfeeding women * Severe cognitive impairment and/or suspicion of lack of compliance or adherence, in the investigator's judgment