CT-guided Needle Guidance Using Stereotaxic Unit, Navigation Versus Conventional Biopsy Technique for the Percutaneous Pulmonary Nodule Biopsy

Inclusion Criteria: * Patient with localized lesions such as pulmonary nodules on chest x-ray, CT or PET CT * Histopathologic examination is necessary if lung lesion is unknown * Histologic findings affect the disease stage or treatment plan * If the investigator decides to perform a percutaneous lung biopsy because the biopsy or diagnosis through the bronchoscopy is not possible or has low risk-benefit * Patient who have consented to contraception during the period of clinical trial participation (one month after the procedure) * Patient who voluntarily agree to participate in this clinical trial and are willing to comply with the protocol Exclusion Criteria: * Patient with pulmonary function insufficiency * Patient who has difficulty in self-breathing (e.g, breathing through oxygen breathing apparatus) * Patient with Uncontrolled coagulation disorders (INR \> 1.3 or Blood platelet count \< 50,000/µl) * Patient with allergy to CT contrast agent * Patient under 19 years old or over 80 years old * Pregnant or lactating * Patient with uncontrollable systemic disease (e.g, uncontrolled hypertension, uncontrolled cardiovascular disease, etc.) * Patient who currently participating or has participated in other clinical trials within 30 days of the screening date * If it is judged inappropriate to participate in this clinical trial under the judgment of the investigator