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 d t dt d t dt d t




1. Which of the following best describes the primary purpose of diagnostic ra
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diography?
A. To treat diseases using ionizing radiation
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B. To produceimages of internal structures for diagnosis
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C. To monitor patient vital signs
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D. To sterilize medical equipment
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Answer: B dt




Rationale: Diagnostic radiography’s main purpose is to produce images of internal bo
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dystructures, allowing physicians to detect and diagnose abnormalities. Options A, C
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, and D are unrelated to diagnostic imaging.
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2. What is the primary source ofionizing radiation in medical imaging?
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A. MRI scanner dt




B. X-ray tube dt




C. Ultrasound transducer dt




D. PET scanner dt




Answer: B dt




Rationale:The X- dt dt




ray tube generates ionizing radiation used in diagnostic radiography. MRI and ultr
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asound use non- dt dt




ionizing energy, while PET uses radioactive tracers rather than producing radiation
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in a tube.
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3. How does the ALARA principle guide radiologic practice?
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A. Maximizing image quality regardless of dose dt dt dt dt dt




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




C. Limiting patient interaction to reduceinfection dt dt dt dt dt




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




Answer: B dt




Rationale: ALARA (“As Low As Reasonably Achievable”) ensures patient and sta
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ff receive the minimum radiation dosenecessary for diagnostic-quality images.
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,4. A radiologic technologistis preparing to image a patient with a suspected fr
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acture. Which safety measure is most important?
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A. Using the fastest imaging speed dt dt dt dt




B. Ensuring properpatient shielding and positioning dt dt dt dt dt




C. Increasing exposure to reduce repeat images dt dt dt dt dt




D. Allowing the patient to move during imaging dt dt dt dt dt dt




Answer: B dt




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. dt




5. Scenario:A 45-year- td dt




old patient expresses concern about radiation exposure. How should the technolo
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gist respond?
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A. Ignore their concerns;radiation is safe dt dt dt dt dt




B. Explain that doseis minimized and benefits outweigh risks
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C. Refuse to performthe exam dt dt dt dt




D. Increase exposure to ensure better images dt dt dt dt dt




Answer: B dt




Rationale:Patients should be informed about the low doseand the diagnostic benefi
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ts, reducing anxiety and promoting informed consent.
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6. Which professional organization establishes standards for radiologic t
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echnologists?
A. WHO
B. ASRT
C. FDA
D. CDC
Answer: B dt




Rationale: The American Society of Radiologic Technologists (ASRT) sets educatio
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nal and professional standards.FDA regulates equipment, CDC focuses on infection con
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trol, WHO on global health.
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, 7. Which imaging 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 dt




Rationale:MRI uses magnetic fields and radio waves, which are non-
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ionizing. CT, X-ray, and fluoroscopyall use ionizing radiation.
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8. What is the most radiosensitive tissue in the human body?
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A. Muscle
B. Skin
C. Bone marrow dt




D. Cartilage
Answer: C dt




Rationale:Bone marrow 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. Which factor primarily affects the quality of an X-ray image?
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A. Patient diet dt




B. Tube voltage and current
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C. Room temperature dt




D. Technologist height dt




Answer: B dt




Rationale:Tube voltage (kVp) and current (mA) controlX-
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ray energy and photon quantity, directly affecting image quality.
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10. How often should radiologic equipment be tested for quality assurance?
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A. Daily
B. Monthly
C. Annually
D. Only when malfunction occurs
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