Practice Questions - Introduction to radiology
Practice Questions - Introduction to Radiology
1. Which one of the following absorbs the most X-rays for a given thickness of that substance?
Air
Bone
Water
Fat
Metal
2. According to BEIR V, the minimum latent period (in years) for radiation induced leukemias is:
2
10
20
30
40
3. Genetic effects of radiation may result from exposure to natural or man-made radiation. The greatest single source of man-made radiation exposure to the general population is:
Fallout from nuclear weapons
Nuclear power plants
Diagnostic medical exposure
Occupational exposure to radiologic technologists
Therapeutic medical exposure
4. Which of the following types of cancer have occured in humans following irradiation?
Lung
Breast
Skin
Thyroid
All of the above
5. The population is irradiated by cosmic rays and by radiations emitted from sources that have been ingested or inhaled. The average annual dose received by each individual is approximately:
10-15 mrems / year
75-100 mrems / year
250-300 mrems / year
500 -750 mrems / year
1000-1200 mrems / year
