Review+Questions+Chapter+9+Radiation+Protection+in+Medical+Radiography

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James Cook University *

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999

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Medicine

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Oct 30, 2023

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pdf

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Uploaded by JusticeTurkey2585

Review Questions Chapter 9 Radiation Protection in Medical Radiography 1. Cancer and genetic defects are examples of: @Stochastic effects C. Birth effects B. Early tissue reactions D. Late tissue reactions ( 1 2. Some examples of measurable late biologic damage are: 1. Cataracts 2. Leukemia 3. Nausea and vomiting 4. Genetic mutations A.1and 2 only f?fi(D 2, and 3 only B.2and 3 only D.1,2,and 4 only 3. Which of the following provide the foundation for the sigmoid, or S-shaped, threshold curve of radiation dose response? 1. Data from human populations observed after acute high doses of radiation 2. Data from human populations observed after chronic low doses of radiation 3. Laboratory experiments on animals (&1 only C.3only B.2only D.1,2,and 3 4. The linear nonthreshold curve implies that biologic response is: 7 I A. Directly proportional to the dose B. Inversely proportional to the dose C. Insignificant in relation to dose D. Not able to be plotted on a dose—response curve 5. Reevaluation of the quantity and type of radiation that was released in the atomic bombing of the cities of Hiroshima and Nagasaki has led to revised atomic bomb data in which radiation-induced leukemia and solid tumors may now be attributed predominantly to: A. Alpha radiation exposure C. Neutron radiation exposure /(fB/?)Gamma radiation exposure D. X-radiation exposure _

6. The radiation dose—response relationship is demonstrated graphically through the use of a curve that maps the observed effects of radiation exposure in relation to the dose of radiation received. Which of the following curves expresses a linear-quadratic nonthreshold dose response? All c.lZ @3% D. 7. During the 10 years immediately after the 1986 Chernobyl nuclear power station accident, which of the following was the most pronounced health effect observed? 1. Dramatic increase in the incidence of childhood leukemia 2. Dramatic increase in thyroid cancer in children living in the regions where the heaviest radioactive contamination occurred 3. Major increase in the number of solid tumors in the general population of the former Soviet Union A.1,2,and 3 {;E)/.?only B.1only D. 3 only 8. The early demise of experimental animals exposed to nonlethal doses of ionizing radiation actually resulted from: 2 A. Accelerated aging @nduction of cancer B. Hemorrhage D. Respiratory distress 9. According to data from studies performed on US radiologic technologists, individuals who began working before 1950 had a somewhat higher risk of dying of when compared with technologists who started working in 1950 and later. A. Darkroom disease C. Pancreatic cancer P lfiDeukemia D. Thyroid cancer ( | S 10. Most diagnostic procedures result in equivalent doses: A. Above 0.1 Sv but less than 1.56 Sv /73\\ ess than 0.1 Sv (1{ :-//L C. Between 1.56 Svand 1.75 Sv D. Above 1.75 Sv

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