Positron Emission Tomography Using [18F]-Labeled Substance P Antagonist Receptor Quantifier in Finding Disease in Patients With Pancreatic Cancer

OBJECTIVES: * Determine whether \[18F\]-labeled substance P antagonist receptor quantifier positron emission tomography can identify pancreatic cancer evident on multiphase CT scan. OUTLINE: Patients undergo multiphase CT scan of the chest, abdomen, and pelvis. No more than 15 days later, patients receive \[18F\]-labeled substance P antagonist receptor quantifier IV and undergo positron emission tomography over 6 hours. Blood is collected periodically to measure the metabolism of the radiotracer by high performance liquid chromatography with radioactive detectors.