To assess the RELIABILITY in terms of accuracy of 3D-CT and 2D-CT reconstructions compared to intraoperative data regarding bronchovascular anatomy and tumor location. 3D CT reconstruction (CT scan without contrast injection) with Innersight3D® is equivalent to 2D CT (CT scan with contrast injection) for planning a minimally invasive lung segmentectomy.

Evaluate the impact of 3D reconstruction (from a CT scan without injection of contrast agent) on intraoperative and postoperative results

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

• Adult patient ≥ 18 years
• 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