Exam (elaborations) Arrt Radiologic Science for Technologists

Chapter 01: Essential Concepts of Radiologic Science Bushong: Radiologic Science for Technologists, 12th Edition MULTIPLE CHOICE 1. Matter is measured in . a. kilograms b. joules c. electron volts d. rems A Matter is measured in kilograms. 2. Atoms and molecules are the fundamental building blocks of . a. energy b. radiation c. matter d. gravity C Atoms and molecules are the fundamental building blocks of matter. 3. Ice and steam are examples of two forms of . a. matter b. radiation c. energy d. work A Ice and steam are examples of two forms of matter. 4. The formula E = mc2 is the basis for the theory that led to the development of . a. x-rays b. electromagnetic radiation c. nuclear power d. cathode ray tubes C The formula E = mc2 is the basis for the theory that led to the development of nuclear power. 5. Radio waves, light, and x-rays are all examples of energy. a. nuclear b. thermal c. electrical d. electromagnetic D Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the spectrum. 6. A moving object has energy. a. potential b. kinetic c. nuclear d. electromagnetic ANS: B A moving object has kinetic energy. 7. What is the removal of an electron from an atom called? a. Ionization b. Pair production c. Irradiation d. Electricity ANS: A The removal of an electron from an atom is called ionization. 8. Ionizing radiation is capable of removing from atoms as it passes through the matter. a. neutrons b. protons c. electrons d. ions ANS: C Ionizing radiation is capable of removing electrons from atoms as it passes through the matter. 9. The energy of x-rays is _ . a. thermal b. potential c. kinetic d. electromagnetic ANS: D X-rays are a form of electromagnetic energy. 10. The biggest source of man-made ionizing radiation exposure to the public is . a. atomic fallout b. diagnostic x-rays c. smoke detectors d. nuclear power plants ANS: B Medical x-ray exposure is the biggest source of man-made radiation. 11. In the United States, we are exposed to _ mSv/year of ionizing radiation from the natural environment. a. 0 to 5 b. 5 to 20 c. 20 to 90 d. 100 to 300 ANS: A We are exposed to about 3 mSv/yr of ionizing radiation from natural environmental sources in the United States. 12. Today, radiology is considered to be a(n) occupation. a. safe b. unsafe c. dangerous d. high-risk ANS: A Today, radiology is considered to be a safe occupation because of effective radiation protection practices. 13. is a special quantity of radiologic science. a. Mass b. Velocity c. Radioactivity d. Momentum ANS: C Radioactivity is a special quantity of radiologic science. 14. What does ALARA mean? a. All Level Alert Radiation Accident b. As Low As Reasonably Achievable c. Always Leave A Restricted Area d. As Low As Regulations Allow ANS: B ALARA means As Low As Reasonably Achievable. 15. Computed tomography was developed in the . a. 1890s b. 1920s c. 1970s d. 1990s ANS: C Computed tomography was developed in the 1970s. 16. Filtration is used to . a. absorb low-energy x-rays b. remove high-energy x-rays c. restrict the useful beam to the body part imaged d. fabricate gonadal shields ANS: A Filtration is used to absorb low-energy x-rays. TRUE/FALSE 1. Mass is the quantity of matter as described by its energy equivalence. ANS: T Mass is the quantity of matter as described by its energy equivalence. 2. Radiation is the removal of an electron from an atom. ANS: F Ionization is the removal of an electron from an atom. 3. Radiology emerged as a medical specialty because of the Snook transformer and the Crookes x-ray tube. ANS: F Radiology emerged as a medical specialty because of the Snook transformer and the Coolidge x-ray tube.