68Ga-AlfatideII for the Differential Diagnosis of of Lung Cancer and Lung Tuberculosis by PET/CT

Inclusion Criteria: * Must be able to provide a written informed consent * Males and females, ≥18 years old. * The definite diagnosis of lung cancer was established by pre-operational bronchoscopic or puncture biopsy or the definite diagnosis of lung tuberculomas was established on the basis of positive sputum culture examinations and confirmed by follow-up. * Without any treatment or resection surgury. * All the biopsies are done at least 10 days before PET/CT scans. * Evaluation of cardiac function. Exclusion Criteria: * Females planning to bear a child recently or with childbearing potential； * Known severe allergy or hypersensitivity to IV radiographic contrast； * Inability to lie still for the entire imaging time because of cough, pain, etc. * Inability to complete the needed examinations due to severe claustrophobia, radiation phobia, etc. * Concurrent severe and/or uncontrolled and/or unstable other medical disease that, in the opinion of the investigator, may significantly interfere with study compliance.