Average gamma energy of different isotopes and half-lives related to radiotherapy.
Understand the Problem
The question contains multiple-choice queries related to gamma energy values, half-lives, and applications of radioactive sources in therapy. It requires understanding of radiology and nuclear physics.
Answer
Pd-103 energy: 0.021 MeV, Ra-226 half-life: 1600 years, Ra-226 not used, Ir-192 energy: 0.38 MeV.
The average gamma energy of Pd-103 is 0.021 MeV. The half-life of Ra-226 is 1600 years. Ra-226 is not used in radiotherapy currently. The average gamma energy of Ir-192 is 0.38 MeV.
Answer for screen readers
The average gamma energy of Pd-103 is 0.021 MeV. The half-life of Ra-226 is 1600 years. Ra-226 is not used in radiotherapy currently. The average gamma energy of Ir-192 is 0.38 MeV.
More Information
Ra-226 used to be a common radioactive source but has been replaced by safer alternatives. Ir-192 is used due to its suitable gamma energy and half-life for medical applications.
Tips
Confusing the gamma energies and half-lives of isotopes can lead to errors. Ensure you verify the data from reliable sources.
Sources
- Commonly used gamma-emitting isotopes - Wikipedia - en.wikipedia.org
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