Sodium 24 has a half-life of 15 hours and it is used in medicine to estimate:
Correct answer: B. Plasma Blood Volume
- A. Kidney Function
- B. Plasma Blood Volume
- C. Iron in Plasma
- D. Thyroid Function
Explanation
The sodium-24 isotope is used to study the circulation of blood. Sodium-24 (Na-24) IS commonly used in medicine for estimating plasma blood volume.
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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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