Inclusion Criteria:  Age 18-80 years Medically operable Undergoing pulmonary resection for either stage I non-small cell lung cancer (NSCLC) (undergoing segmentectomy) or metastatic disease to the lung Lesions < 2cm in longest diameter Lesions are located at least 1cm from the pleura  Exclusion Criteria:  Pregnant Serum creatinine > 2.0 Central lesions Iodide allergy