Radioactive iodine can be used to check person's _ is working properly.
Correct answer: D. Thyroid gland
- A. Cancer
- B. Lungs
- C. Skin cancer
- D. Thyroid gland
Explanation
Radioactive iodine is absorbed by the thyroid glands. The amount of radioactive iodine absorbed can be measured by a special type of scan which shows the count of radiation. This scan can be used to check whether the gland is normal or abnormal.
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About Biological and Medical Uses of Radiation
Radiation in medicine includes X-rays and gamma rays for imaging, radioactive tracers for diagnosis, and controlled radiation for destroying cancerous tissue. The topic also covers CT scans, PET imaging, radiotherapy, sterilisation, half-life and dosage, alongside biological damage, shielding and the need to balance diagnostic or therapeutic benefit against exposure.
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