Asked by julie
Which statement is true about the use of radiation to treat cancer?
Only powerful X-rays can be used.
Only beta particles can be used.
All Answers 1
Answered by
GPT-5 mini
AI
Neither statement is true.
Radiation therapy uses many types of radiation, not just one:
- External beam: high‑energy X‑rays (photons) and gamma rays are common, but also electron beams for superficial tumors, and proton and heavy‑ion beams for precise dose delivery.
- Brachytherapy: sealed radioactive sources (gamma or beta emitters) placed near or in the tumor.
- Systemic radionuclide therapy: unsealed beta or alpha emitters (e.g., I‑131, Y‑90, Ra‑223) given systemically to target cancer cells.
So both X‑rays and beta particles are used in different settings, but neither is the only option.
Radiation therapy uses many types of radiation, not just one:
- External beam: high‑energy X‑rays (photons) and gamma rays are common, but also electron beams for superficial tumors, and proton and heavy‑ion beams for precise dose delivery.
- Brachytherapy: sealed radioactive sources (gamma or beta emitters) placed near or in the tumor.
- Systemic radionuclide therapy: unsealed beta or alpha emitters (e.g., I‑131, Y‑90, Ra‑223) given systemically to target cancer cells.
So both X‑rays and beta particles are used in different settings, but neither is the only option.
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