Q:

Which of the following is true?

belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:17| Question number:9

waelhammad

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2022-10-21

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Which of the following is true?

A patient exposed to diagnostic x-rays will emit x-rays for a short time after the procedure.
A cancer patient treated with a megavoltage beam of x-rays will emit x-rays for a short time after the treatment.
For a short time after having a bone scan using the radionuclide technetium 99 m, the patient will emit gamma rays.
The human body does not contain any radioactive material unless it has been exposed to man-made radioactive material.

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waelhammad

2022-10-21

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C: A bone scan (any nuclear medicine scan) involves taking some radioactive material into the body which then emits gamma rays to be detected outside the body. The body takes some time to excrete the material (and much of it decays) so until that happens, the body is more radioactive than is usually the case.

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