indium In 111-pentetreotide

A radioactive drug used to find certain types of neuroendocrine tumors (tumors that form from cells that release hormones). Indium In 111-pentetreotide binds to a protein called somatostatin receptor, which is found on some neuroendocrine tumor cells. Indium In 111-pentetreotide builds up in these cells and gives off radiation that can be detected by a scanner to help show where the tumor cells are in the body.