TECHNIQUE: , Sequential axial CT images were obtained from the base of the brain to the upper abdomen following the uneventful administration of 100cc Optiray 350 intravenous contrast.,FINDINGS: , The heart size is normal and there is no pericardial effusion.  The aorta and great vessels are normal in caliber.  The central pulmonary arteries are patent with no evidence of embolus.  There is no significant mediastinal, hilar, or axillary lymphadenopathy.  The trachea and mainstem bronchi are patent.  The esophagus is normal in course and caliber.  The lungs are clear with no infiltrates, effusions, or masses.  There is no pneumothorax.  Scans through the upper abdomen are unremarkable.  The osseous structures in the chest are intact.  ,IMPRESSION: , No acute abnormalities.radiology, sequential axial ct images, optiray, pericardial effusion, mediastinal, hilar, axillary, lymphadenopathy, ct chest, upper abdomenNOTE