Study of 111In-DAC as an Medical Imaging Agent for Lung Cancer and Brain Cancer Consistent With Metastatic Lung Cancer

Inclusion Criteria Patients will be eligible for the study if they: * Are male or non-pregnant, non-lactating females 18 years of age or older (must agree to use an appropriate and effective method of birth control during the study and for 2 weeks after study) * Have an ECOG performance status of Zero or One * Are being evaluated for known or suspected non-small-cell lung cancer (NSCLC), or known brain lesions consistent with metastatic lung cancer * (For NSCLC patients)Have been previously scheduled for biopsy or surgical excision of the suspected NSCLC, or have a pathological diagnosis of lung cancer within 2 months of enrollment but have received no previous treatment * (For brain cancer patients) Have clinical signs and symptoms consistent with a primary NSCLC with histological or cytopathological confirmation. Patients cannot have received previous treatment with radiation to the brain. * Have signed an informed consent form Exclusion Criteria Patients will not be eligible for this study if they: * Have a history or suspicion of significant allergic reaction or anaphylaxis to any of the 111In-DAC components * Have a clinically unstable medical condition or opportunistic infection, a life-threatening disease state, impaired renal or hepatic function or are immunosuppressed * Are taking or have taken part in any investigational study within 30 days of start of study * Have received an indium agent within 30 days of start of study * Are not able to remain immobile during scanning time * Have taken drugs that may damage the kidneys within 2 weeks of start of study * Have abnormal laboratory test results: hemoglobin\<9.5 gms/dl, serum creatinine\>1.5mg/100ml, alkaline phosphatase 2X the upper limit of normal * Have undergone an excisional and/or needle localization biopsy within 4 days prior to study drug administration * Have undergone a PET scan within 7 days prior to study drug administration * Have any active or previously treated second malignancy except carcinoma in situ of the uterine cervix or non-melanoma skin cancer