Iodine 131 MIBG Scan (I-131)

In this scan, a radioisotope (Iodine-131 meta-iodobenzylguanidine, I-131 MIBG) is injected intravenously for both imaging and treating certain types of neuroendocrine tumors (NET). The radioactive iodine builds up in the NET cells and the radiation in the iodine kills the NET cells.