Twenty Questions Radiation Protection Radiation Protection Questions 1
- Slides: 22
Twenty Questions Radiation Protection
Radiation Protection Questions 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1. The traditional unit of measure for the equivalent dose (Eq. D) is the _____. �Sievert (Rem)
2. This consists of two protons and two neutrons. �Alpha Particle.
3. The millisievert (m. Sv) is a subunit of the Sievert. One Sievert equals _______ millisieverts. � 1000
4. The radiation interaction with tissue that involves ejecting a K-shell electron is called? �Photoelectric effect
5. The most common type of naturally occurring radiation is: �Radon – Radon makes up about 55% of all natural and manmade radiation exposures in the U. S.
6. Naturally occurring background radiation that comes from the sun and stars is called____. �Cosmic Radiation
7. Referring to the chart, is there more natural or man-made radiation exposure for the average U. S. citizen? �Natural.
8. What phase of cellular division belongs where letter A is on the diagram? �Metaphase
9. What is the annual occupational effective dose for radiographers during routine operations? � 50 m. Sv or 5 rem
10. When exposed to radiation as a part of their educational experience, students under the age of 18 years old, should not exceed an effective dose limit of _______ annually. � 1 m. Sv or. 1 rem
11. Determine the cumulative effective dose (Cum. Ef. D) to the whole body of an occupationally exposed person who is 27 years old. � 270 m. Sv or 27 Rem � 10 m. Sv X Age or 1 Rem x Age
12. Cancer & Genetic defects are examples of ______ effects. A. B. C. D. Stochastic Nonstochastic Birth Deterministic �Stochastic effects are mutational, non-threshold, randomly occurring effects. �Non-stochastic or deterministic effects can be directly linked to a radiation event.
13. Which of the following curves represents a non-linear threshold response. �Curve 3.
14. Which of the following curves represents the standard on which radiation dose limits are set? �Curve 1 Linear - non threshold
15. The lethal dose of ionizing radiation for humans is stated as: �The LD 50/30 is 300 – 400 Rads Sometimes this is expressed as the LD 50/60 �Under 100 rad, no death is expected. �Without medical support, death to the entire population occurs at about 600 Rad.
16. What do basal cells of the skin, intestinal crypt cells and reproductive cells have in common? �All cells are radiosensitive �Lymphocytes, spermatogonia, erythroblasts, DNA molecules & intestinal crypt cells are highly radiosensitive �Muscle & nerve cells have low radiosensitivity
17. Which of the following are classified as high LET Radiations? Alpha particles Gamma Rays X-rays �Alpha particles only
18. Which molecules of the human body are most commonly acted on by ionizing radiation to produce molecular damage through and indirect action? �Water Molecules
19. The law of Bergonie and Tribondeau takes into account that the most pronounced radiation effects occur in cells having the _(most/least) reproductive activity, (longest/shortest) mitotic phases and (most/least) maturity. �Most Reproductive, longest mitotic phase, least maturity
20. Somatic cells divide through the process of: �Mitosis - Somatic cells are all general cells in the body �Meiosis is the division of the genetic or germ cells
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