Ferrioxamine is a paramagnetic agent used for the kidneys and urinary tract . Nitroxides are also paramagnetic agents , but are not widely used . Reticuloendothelial contrast agents are used in liver , spleen and lymph node MRIs . In liver and spleen imaging , specific contrast agents are used that target the reticuloendothelial system of the liver and spleen . Because of the inability of most imagers to differentiate between normal and abnormal lymph nodes , USPIO has become widely used . USPIO allows imagers to have the...











SUBJECTS

