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 m a ma m a ma m a




1. Which of the following best describes the primary purpose of diagnostic
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radiography?
A. To treat diseases using ionizing radiation
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B. To produce images 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 ma




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




B. X-ray tube ma




C. Ultrasound transducer ma




D. PET scanner ma




Answer: B ma




Rationale: The X- ma ma




ray tube generates ionizing radiation used in diagnostic radiography. MRI and
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ultrasound use non- ma ma




ionizing energy, while PET uses radioactive tracers rather than producing radiati
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on 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 ma ma ma ma ma




B. Minimizing radiation exposure while achieving diagnostic quality ma ma ma ma ma ma




C. Limiting patient interaction to reduce infection
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D. Increasing exposure time for better penetration ma ma ma ma ma




Answer: B ma




Rationale: ALARA (“As Low As Reasonably Achievable”) ensures patient and
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staff receive the minimum radiation dose necessary for diagnostic-quality images.
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,4. A radiologic technologist is preparing to image a patient with a suspected
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fracture. Which safety measure is most important?
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A. Using the fastest imaging speed
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B. Ensuring proper patient shielding and positioning
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C. Increasing exposure to reduce repeat images ma ma ma ma ma




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




Answer: B ma




Rationale: Proper shielding and positioning minimize unnecessary exposure and pr
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otect radiosensitive tissues. Options A, C, and D can increase radiation risk or deg
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rade image quality.
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5. Scenario:A 45-year- m
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old patient expresses concern about radiation exposure. How should the techn
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ologist respond? ma




A. Ignore their concerns; radiation is safe
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B. Explain that dose is minimized and benefits outweigh risks
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C. Refuse to perform the exam ma ma ma ma




D. Increase exposure to ensure better images
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Answer: B ma




Rationale: Patients should be informed about the low dose and the diagnostic ben
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efits, reducing anxiety and promoting informed consent.
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6. Which professional organization establishes standards for radiologic
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technologists?
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A. WHO
B. ASRT
C. FDA
D. CDC
Answer: B ma




Rationale: The American Society of Radiologic Technologists (ASRT) sets educati
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onal and professional standards. FDA regulates equipment, CDC focuses on infection
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control, WHO on global health.
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, 7. Which imaging modality does not use ionizing radiation?
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A. CT scan ma




B. MRI
C. X-ray
D. Fluoroscopy
Answer: B ma




Rationale: MRI uses magnetic fields and radio waves, which are non-
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ionizing. CT, X-ray, and fluoroscopy all 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 ma




D. Cartilage
Answer: C ma




Rationale: Bone marrow contains rapidly dividing cells, making it highly sensitive
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to ionizing 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 ma




B. Tube voltage and current
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C. Room temperature ma




D. Technologist height ma




Answer: B ma




Rationale: Tube voltage (kVp) and current (mA) control X-
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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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