Inclusion Criteria:  Patients with: clinical features of carcinoid syndrome (or) increased serum and urinary markers suggestive of carcinoid (or) endoscopic biopsy proven carcinoid (or) metastases which are biopsy proven as carcinoid. Patient is scheduled to have a clinically indicated staging CT exam. Patients who have signed their informed consent form to undergo the study.  Exclusion Criteria:  Patients who have already had their primary GI carcinoid resected. Contraindication to intravenous contrast agents (e.g. allergy, renal failure, dialysis, pregnancy etc.). Pregnant patients.