Radiation Protection In Medical Radiography Study Guide Rated A+

Alpha particles have a radiation weighting factor (WR) that is numerically equal to a. 1. b. 5. c. 10. d. 20. {Ans: D}Which of the following terms involves a random effect of ionizing radiation? a. Early tissue reactions b. Change in white blood cell count c. Reddening of the skin d. Stochastic event {Ans: D}If enough explosives are used to spread radioactive material over a broad area, then radioactivity is a. extremely hazardous and may be much higher than background levels. b. moderately hazardous and may be higher than background levels. c. slightly hazardous and may be only slightly higher than background levels. d. diluted and may not be much higher than background levels. {Ans: D}In photoelectric absorption to dislodge an inner-shell electron from its atomic orbit, the incoming x-ray photon must be able to transfer a quantity of energy a. less than the energy that holds the atom together. b. 10 times as great as the energy that holds the atom together. c. as large as or larger than the amount of energy that holds the electron in its orbit. d. equal to or greater than 1.022 MeV, regardless of the energy that holds the electron