* For bone scans: Technetium-99m MDP (methylene diphosphonate) is the most commonly used radiopharmaceutical. It's injected intravenously and accumulates in areas of increased bone metabolism, which can help identify fractures, infections, tumors, or other abnormalities.
* For thyroid scans: Iodine-123 or Technetium-99m pertechnetate are commonly used. They are taken orally and accumulate in the thyroid gland, allowing for assessment of thyroid function, size, and any nodules.
* For heart scans (SPECT, PET): Thallium-201 or Technetium-99m sestamibi are used to assess blood flow to the heart. These radiopharmaceuticals are injected intravenously and accumulate in healthy heart muscle.
* For kidney scans: Technetium-99m DTPA (diethylenetriamine pentaacetic acid) or MAG3 (mercaptoacetyltriglycine) are used. They are injected intravenously and help assess kidney function, size, and any blockage in the urinary tract.
* For lung scans (ventilation/perfusion scans): Technetium-99m MAA (macroaggregated albumin) is used for perfusion imaging (blood flow), while Xenon-133 is used for ventilation imaging (air flow).
It's important to note that these are just a few examples, and the specific radiopharmaceutical used will vary depending on the type of scan being performed. Your doctor will determine the best substance for your individual needs.
