PET/CT is an examination that combines the anatomic detail of CT with the metabolic activity information of positron emission tomography (PET), thus providing a more sensitive (but not more specific) evaluation of cancer or potential cancer. The main indications for PET/CT are evaluation of an indeterminate mass (such as a lung mass or nodule), the evaluation of cancer of an unknown primary site, and staging/restaging of known cancer. PET/CT is becoming a standard of care in the complete evaluation of cancer, and is currently Medicare approved for lung, colorectal, esophageal, head & neck, lymphoma, melanoma, and breast cancer. Please call the NM department for more information and consultation at 1-2867.