title: The preparation of iodine-123 labelled contrast agents.
mesh_terms: D003287:Contrast Media; D003973:Diatrizoate; D007457:Iodine Radioisotopes; D007483:Iothalamic Acid; D007553:Isotope Labeling / Q000379:methods*
chemical_list: D003287:Contrast Media; D007457:Iodine Radioisotopes; D003973:Diatrizoate; D007483:Iothalamic Acid