In nuclear radiography for medical diagnosis which rays are used?
Correct answer: C. Gamma rays
- A. Alpha particles
- B. UV rays
- C. Gamma rays
- D. X rays
Explanation
Diagnostic techniques in nuclear medicine use radioactive tracers which emit gamma rays from within the body.
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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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