RADT_152_Unit_8_Exam

RADT_152_Unit_8_Exam - RADT 152 RADIATION PROTECTION Unit 8...

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Unformatted text preview: RADT 152 RADIATION PROTECTION Unit 8 Exam Protecting Occupationally Exposed Radiologic Personnel 2 8.0 Protecting Occupationally Exposed Radiologic Personnel Directions: 1. Write your name and the date on your Scantron form. Identify the subject as the course number (for example, RADT 153) along with the test number (for example, Unit 4). 2. For each of the questions below, select the best answer to the question. 3. Using a No. 2 pencil, fill in the appropriate answer on the answer sheet. 4. Erase unwanted answers completely. Questions with two or more filled in answer spaces are graded as incorrect. 5. Answer all questions. 6. You have a maximum 15 minutes to complete the following 25 questions. (Note: This time factor approximates the amount of time you would be allowed to answer the same number of questions on the Registry examination in radiography). 1. The annual occupational effective dose for whole body exposure during routine exposures is ________________. A. B. C. D. E. 2. 5 rem 10 rem 25 rem 50 rem 500 rem A lifetime effective dose does not exceed 10 times the occupationally exposed persons age in year. A. B. True False 3 3. A 55 year old radiation worker’s CED limit is ? A. B. C. D. E. 4. _______________ is a quantity that attempts to take into account the different kinds of biological harm that is produced by different types of radiation, considering the type and energy of the radiation. A. B. C. D. E. 5. True False The equivalent dose must be _______________ whenever possible to reduce the potential for somatic and genetic damage. A. B. C. D. E. 7. lifetime effective dose CED Cumulative effective dose limit Equivalent dose Occupationally exposed dose The small workplace in radiation-related jobs allows for a larger equivalent dose. A. B. 6. 5 rem 5.5 rem 27.5 rem 55 rem 275 rem reduced controlled minimized increased absolute Occupational exposure of the radiographer and other occupationally exposed persons should be kept _____________________________. A. B. C. D. E. As level as reasonably achievable As low as reasonably achievable Reduced Minimum None of the above 4 8. The best way for radiologists and radiographers to keep their dose values well below their allowable limits is to employ radiation control procedures. A. B. 9. ______________ is the possibility of developing a radiogenic cancer or induction of a genetic defect as a consequence of the radiation exposure received. A. B. C. D. E. 10. repeat exposures scattered radiation leakage radiation B and C only None of the above Which of the following is NOT a method used in reducing patient and radiographer exposure? A. B. C. D. E. 12. hazard occupational hazard risk occupational risk none of the above What poses the greatest occupational hazard in diagnostic radiology? A. B. C. D. E. 11. True False beam limitation devices filtration shielding correct technical factors slow speed films _______________________ is an equipped light localizing aperture rectangular collimator that restrict the size of the radiographic beam so that its margins do not extend beyond the image receptor. A. B. C. D. E. protective shielding beam localizing devices beam limitation devices positive beam limitation none of the above 5 13. What happens when a radiographic beam is properly filtered? A. B. C. D. E. 14. Without proper filtration a high percentage of the normally excluded low energy photons interact with the tissues of the patients body. A. B. 15. protection from secondary scatter protection from high kVp exposure protection from high mAs exposure all of the above none of the above _______________ controls the quantity of scattered radiation. A. B. C. D. E. 17. True False Which of the following is a function of lead aprons? A. B. C. D. E. 16. non useful low energy photons are removed from the primary beam useful low energy photons are removed from the primary beam non useful high energy photons are removed from the primary beam useful high energy photons are removed from the primary beam none of the above filtration factors technical factors supervisory factors all of the above none of the above When high speed image receptor systems are used there is a __________ radiographic exposure required. A.` C. D. E. F. more dense more contrast more less none of the above 6 18. A female radiographer must inform her supervisor when she becomes pregnant. A. B. 19. ________________ prevents primary radiation from reaching personnel or members of the general public on the other side of the barrier. A. B. C. D. E. 20. 1/10 – inch lead 1/10 – inch aluminum 1/16 – inch lead 1/16 - inch aluminum none of the above What does secondary radiation consist of? A. B. C. D. E. 22. primary beam primary protective barrier cement all of the above none of the above The typical consistency and height of the primary protective barrier is A. B. C. D. E. 21. True False leakage from the tube housing the primary beam scatter all of the above both A and C The secondary barrier lead glass window protecting the RT behind at the control panel must be ________ lead equivalent. A. B. C. D. E. 1.0 1.5 2.0 2.5 3.0 7 23. Diagnostic type protective tube housing consists of ___________. A. B. C. D. E. 24. What amount of leakage radiation is measured at a distance of 1m from the x-ray source? A. B. C. D. E. 25. 1 mR per hour 1.5 mR per hour 50 mR per hour 100 mR per hour 1000 mR per hour How can the radiographer ensure protection from scattered radiation during fluoroscopic exams? A. B. C. D. E. 26. lead filtration lead housing lead lined metal housing lead aprons none of the above use a lead apron use a TLD stand as far from the patient as possible only be close to the patient when assistance in needed both C and D What items listed below does a radiographer need to wear during fluoroscopy? 1. 2. 3. 4. 5. A. B. C. D. E. 27. lead apron lead gloves thyroid shield TLD/film badge Safety glasses 1,2,3 1,3,4 2,4,5 3,4,5 1,2,5 Which of the following is not a method or device used in reducing the dose received by the radiographer? 8 1. 2. 3. 4. 5. 6. 7. A. B. C. D. E. 28. beam collimation filtration gonadal shielding controlled technical factors par speed image receptors correct radiographic processing structural shielding 1 7 6 5 4 A protective curtain should be _____ - mm lead equivalent. A. B. C. D. E. 29. The protective curtain should be placed .... A. B. C. D. E. 30. .25 .50 .75 1.0 1.5 between the patient and the fluoroscopic unit between the radiologist/fluoroscopist and the patient between the radiologist/fluoroscopist and the control panel between the patient and the control panel between the table bucky and the patient The bucky slot shielding device automatically covers the bucky slot opening in the side of the x-ray table during fluoroscopic exam and should be positioned at the head end of the table. A. B. True False ...
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