Within an 18-day screening period, eligible subjects will be enrolled into the study and undergo percutaneous aspiration or percutaneous biopsy or RF ablation utilizing the ActiSight™ Needle Guidance system using CT to guide the needle. Subjects will be followed-up for at least one hour at the clinic for safety and preliminary accuracy evaluations. An erect chest radiograph will be performed within 90 minutes of observation after chest aspiration if performed to detect the majority of post procedure pneumothoraces for biopsies in the chest. Post procedural CT will be performed according to the physician's consideration. ** Note ** If any complications are observed while using the ActiSight System, the investigator will revert to using standard procedure.