RADT_152_Unit_3_Exam

RADT_152_Unit_3_Exam - RADT 152 Radiation Protection Unit 3...

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Unformatted text preview: RADT 152 Radiation Protection Unit 3 Exam Radiation Quantities and Units 2 3.0 Radiation Quantities and Units Directions: 1. Write your name and the date on your Scantron form. Identify the subject as the course number (for example, RADT 101) along with the test number (for example, Unit 1). 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. Somatic damage is biological damage to the body of the exposed individual caused by ionizing radiation. A. B. 2. True False Occupational exposure is defined as which of the following? A. B. C. D. E. Biological damage to the body of the exposed individual. Radiation workers are that are being radiographed for health purposes. Radiation exposure received by radiation workers while exercising their professional responsibilities. Exposure to society by background radiation. None of the above. 3 3. A group that was formed to establish a unit for radiation exposure was _______________________. A. B. C. D. E. 4. These effects appear within minutes, hours, days, or weeks of radiation exposure. A. B. C. D. E. 5. True False Damage that does not appear until months or even years following exposure. A. B. C. D. E. 7. Genetic effects Short-term somatic effects Long-term somatic effects Heritable effects Late somatic effects A radiation dose below a negligible chance an individual has of sustaining specific biological damage is called threshold dose. A. B. 6. International Commission of Radiation Units and measurements The British X-Ray and Radium Protection Committee International Committee on Radiation Protection and Measurements. National Council on Radiation Protection Wilhelm Roentgen Association Genetic effects Short-term somatic effects Long-term somatic effects Heritable effects Early somatic effects This system was developed interchange units through out the world in all sciences. A. B. C. D. E. Traditional Unit system Effective dose system of Units National Unit system International system of Units International system of Radiation Protection units, measurements, and doses. 4 8. ______________ provides a method with which to calculate the realistic absorbed dose for all types of ionizing radiation, including protons and neutrons as well as x-rays. A. B. C. D. E. 9. The ICRP’s term for the overall detriment to the entire person as a result of the dose of radiation he or she received depending on where it was received is considered the effective dose equivalent. A. B. 10. Dose Dose Dose Dose Dose equivalent equivalent equivalent equivalent equivalent = = = = = dose equivalent x exposure effective dose x absorbed dose quality factor x equivalent dose absorbed dose x quality factor quality factor x effective dose Traditional units are units that were created so that sciences throughout the world could use the same units. A. B. 12. True False Which of the following factors may be multiplied to determine does equivalent? A. B. C. D. E. 11. Linear Energy Transfer Short-term somatic effects Quality Factor Effective Dose Dose Equivalent True False Which of the following is the SI unit of measuring absorbed doses? A. B. C. D. E. Roentgen Sievert REM Gray Coulombs/kilogram 5 13. This measures the overall risk of exposure to ionizing radiation. It takes into consideration the exposure to the entire body. A. B. C. D. E. 14. Which of the following units of measurement are basic radiation quantities that diagnostic imaging professionals must understand? 1. 2. 3. 4. 5. 15. A. B. C. D. E. 1, 3, 5 1, 2, 3, 4, 5 1, 2, 4, 5, 2,4,5 None True False Which of the following is the SI unit of measurement for exposure? A. B. C. D. E. 17. Exposure Absorbed Dose Dose Equivalent Equivalent Dose Effective Dose Exposure is defined as the amount of ionizing radiation in liquid that may strike an object such as the human body when in the vicinity of a radiation source. A. B. 16. Linear Energy Transfer Short-term somatic effects Effective Dose Quality Factor Dose Equivalent Roentgen Sievert REM Gray Coulombs/kilogram Given the following information 1 (C/kg) = (1/ 2.58 x 10-4) R convert 100 C/kg into Roentgens. 100 C/kg=___________R A. B. C. D. E. 39 R .0039 x 104 R 39 x 104R 3.9 R None of the above 6 18. The amount of energy per unit mass absorbed by the irradiated object is the definition for which of the following measurements. A. B. C. D. E. 19. (Rad) stands for _________ and indicates the amount of radiant energy transferred to an irradiated object of any type of ionizing radiation. A. B. C. D. E. 20. True False __________ modifying factor used in the calculation of the dose equivalent to determine the ability of a dose of any kind of ionizing radiation to cause biologic damage. A. B. C. D. E. 22. Radiation Allowance Dose Radiological acquired Disease Radiation And Dosimetry Radiation Absorbed Dose Roentgen Absorbed Dose Dose Equivalent and Equivalent Dose are often interchangeably used as the same thing the difference is that one is the average of the dose to and entire organ and the other is based on an exact dose to a point in tissue. A. B. 21. Linear Energy Transfer Absorbed Dose Quality Factor Effective Dose Dose Equivalent Linear Energy Transfer Collective dose Quality Factor Effective Dose Dose Equivalent Linear Energy Transfer (LET) is the amount of energy transferred on average by incident radiation to an object per unit length of track through the object. A. B. True False 7 23. This provides a measure of the overall risk of exposure to ionizing radiation. A. B. C. D. E. 24. LET (linear energy transfer) is measured in _________? A. B. C. D. E. 24. Exposure Absorbed Dose Quality Factor Effective Dose Dose Equivalent KeV/µm Rad Rem Gy C/kg The Seivert is the SI unit of measurement for __________. A. B. C. D. E. Linear Energy Transfer Equivalent Dose Dose Equivalent Effective Dose Both B and C ...
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