Nuclear medicine - internal radiotherapy

When using nuclear medicine techniques, an orally or intravenously administered drug travels to the targeted organ, delivering radiation for a relatively short period.  Radiation is accurately delivered to the tumour area while radiation to the surrounding healthy tissue is small.
 
Typical nuclear medicine techniques include radioiodine therapy to treat thyroid cancer, lutetium therapy to treat certain neuroendocrine tumours, selective internal radiation therapy (SIRT) to treat liver metastases, and radium and samarium therapies to treat bone metastases from prostate cancer. Medical imaging is typically important when using nuclear medicine techniques and is used to monitor the movements of radiotracers in your body.