10 x 10mL vials of Bracco Isovue-M 200 Iopamidol 41%, a radiopaque (RAY dee oh payk) contrast agent. This medicine contains iodine, a substance that absorbs x-rays. Radiopaque contrast agents are?used?to allow blood vessels, organs, and other non-bony tissues to be seen more clearly on a CT scan or other radiologic (x-ray) examination.