TEST BANK FOR Bushong’s Radiologic Science for Technologists: Physics, Biology, and Protection 13th Edition by Stewart C. Bushong, Elizabeth Shields ISBN:978-0323765367 COMPLETE GUIDE 100% VERIFIED A+ GRADE ASSURED!!!!NEW LATEST UPDATE!!!!

,CHAPTER 1: INTRODUCTION TO RADIOLOGIC SCIENCE z l zl z l zl z l




1. Which of the following best describes the primary purpose of diagnostic ra
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diography?
A. Totreat diseases using ionizing radiation
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B. Toproduceimages ofinternal structures fordiagnosis
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C. To monitor patient vital signs zl zl zl zl




D. Tosterilize medical equipment zl zl zl




Answer: B zl




Rationale: Diagnostic radiography’s main purpose is to produceimages ofinternal bo zl zl zl zl zl zl zl zl zl zl zl




dystructures,allowing physicians to detectand diagnose abnormalities. Options A, C
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, and D are unrelated to diagnostic imaging.
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2. Whatis the primary sourceofionizing radiation in medical imaging?
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A. MRI scanner zl




B. X-ray tube zl




C. Ultrasound transducer zl




D. PET scanner zl




Answer: B zl




Rationale:TheX- zl zl




ray tubegenerates ionizing radiation usedin diagnostic radiography. MRIand ultr
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asound usenon- zl zl




ionizing energy, while PETuses radioactive tracers rather than producing radiation
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lin a tube. zl zl




3. Howdoes theALARA principle guide radiologicpractice?
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A. Maximizing image quality regardless ofdose zl zl zl zl zl




B. Minimizing radiation exposurewhile achieving diagnostic quality zl zl zl zl zl zl




C. Limiting patient interaction to reduceinfection zl zl zl zl zl




D. Increasing exposure time for better penetration zl zl zl zl zl




Answer: B zl




Rationale:ALARA (“As Low As Reasonably Achievable”) ensures patient and sta zl zl zl zl zl zl z l zl zl zl




ffreceivethe minimum radiation dosenecessaryfor diagnostic-quality images.
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,4. A radiologic technologistis preparing to image a patient with a suspected fra
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cture. Which safety measure is most important?
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A. Usingthefastest imaging speed zl zl zl zl




B. Ensuring properpatient shielding and positioning zl zl zl zl zl




C. Increasing exposureto reducerepeat images zl zl zl zl zl




D. Allowing the patient to moveduring imaging zl zl zl zl zl zl




Answer: B zl




Rationale:Propershielding and positioning minimize unnecessary exposure and prot
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ect radiosensitive tissues. Options A, C,and D can increase radiation risk or degrade i
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mage quality. zl




5. Scenario:A 45-year- zl zl




old patient expresses concern about radiation exposure. How should the technolo
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gist respond? zl




A. Ignoretheir concerns;radiation is safe zl zl zl zl zl




B. Explain that doseis minimized andbenefits outweigh risks
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C. Refuseto performthe exam zl zl zl zl




D. Increaseexposure to ensure better images zl zl zl zl zl




Answer: B zl




Rationale:Patients should beinformed about the low doseand the diagnostic benefit
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s, reducing anxiety and promoting informed consent.
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6. Which professional organizationestablishes standards for radiologic t
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echnologists?
A. WHO
B. ASRT
C. FDA
D. CDC
Answer: B zl




Rationale: The American Society of Radiologic Technologists (ASRT) sets education
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al and professionalstandards.FDA regulates equipment, CDC focuses on infection contr
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ol, WHO on global health.
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, 7. Whichimaging modality does not use ionizing radiation?
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A. CT scan
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B. MRI
C. X-ray
D. Fluoroscopy
Answer: B zl




Rationale:MRIuses magnetic fields andradio waves, which arenon-
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ionizing. CT, X-ray, and fluoroscopyall use ionizing radiation.
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8. Whatis the mostradiosensitive tissuein the human body?
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A. Muscle
B. Skin
C. Bone marrow zl




D. Cartilage
Answer: C zl




Rationale:Bonemarrow contains rapidly dividing cells, making it highly sensitive to i
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onizing radiation. Muscle, skin, and cartilage are less sensitive.
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9. Whichfactorprimarily affects the quality ofanX-ray image?
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A. Patient diet zl




B. Tubevoltage and current
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C. Room temperature zl




D. Technologist height zl




Answer: B zl




Rationale:Tubevoltage (kVp) and current (mA) controlX-
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ray energy and photon quantity, directly affecting image quality.
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10. How oftenshould radiologicequipment be testedforquality assurance?
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A. Daily
B. Monthly
C. Annually
D. Only when malfunction occurs
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