Which of the following is used to estimate the circulation of blood in a patient?
Correct answer: D. Sodium-24
- A. Carbon-14
- B. Carbon-12
- C. Phosphorus-3
- D. Sodium-24
Explanation
Salt solutions containing compounds of sodium-24 are injected into the bloodstream to help locate obstructions to the flow of blood and estimate the circulation of blood flow.
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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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