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1. what does organ affinity mean

  • type of therapy that cannot be destroyed
  • type of therapy that works best with one organ
  • type of therapy that works best with more than one organ
  • type of therapy that works well with everything
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2. give another advantage of using cobalt-60 in radiotherapy

  • it lasts all the time
  • has a half life of 6.3 years so it will not need replaced as much
  • has a half life of 5.3 years so it will not need replaced as much
  • it can be ordered in straight away

3. which type of radiation comes from iodine 131

  • gamma
  • gamma and alpha
  • gamma and beta
  • beta and alpha

4. what is cobalt-60 used for

  • treating cancer
  • general therapy
  • thyroid gland
  • treating cell repair

5. why is cobalt-60 suitable to use outside the body

  • it is the most penetrating and it will go through a lot of flesh/muscle
  • it is less penetrating which means that it will not harm flesh/muscle
  • it is less ionising
  • can be controlled by the patient

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