As the numbers of valve replacements increase in the general population, complications will be seen more often in the Radiology Department. The major problems reported thus far are anemia, regurgitation, infection, thrombosis, embolus and poppet variance. Following valve replacement, the failure of a patient to thrive is due either to myocardial disease, thrombus formation at the [See figure in the pdf file] valve or partial separation of the valve prosthesis. The latter two conditions are important to diagnosis since repair is feasible. Fluoroscopy and cineangiography are the only definitive methods of evaluating these treatable conditions.