Final answer:
Radiation exposure received by persons not employed in the medical imaging profession is true. Humans are exposed to radiation from various sources, including natural background radiation and human-made radiation. Measures can be taken to minimize exposure.
Step-by-step explanation:
Radiation exposure received by persons not employed in the medical imaging profession, such as patients and the general public, is true. Humans are exposed to radiation from various sources, including natural background radiation and human-made radiation from nuclear accidents, medical treatments, and diagnostic imaging. Examples of natural radiation sources include cosmic rays, radon gas, and radioactive isotopes in food and soil. It is impossible to avoid some exposure to ionizing radiation, but measures can be taken to minimize exposure.