Test Bank for Radiologic Science for Technologists 13th Edition By Stewart C. Bushong, and Elizabeth Shields| 9780323765367| All Chapters| LATEST

TEST BANK FOR RADIOLOGIC SCIENCE FOR TECH
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NOLOGISTS 13TH EDITION BY BUSHONG AND SHIE
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LDS |ALL CHAPTERS | QUESTIONS & 100% VERIFIED
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ANSWERS AND RATIONALES | GRADED A+
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,CHAPTER 1: INTRODUCTION TO RADIOLOGIC SCIENCE n p np n p np n p




1. Which of the following best describes the primary purpose of diagnosti
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c radiography?
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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 np



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. Option
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s 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 np



B. X-ray tube np



C. Ultrasound transducer np



D. PET scanner np




Answer: B np



Rationale: The X- np np



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



ionizing energy, while PET uses radioactive tracers rather than producing radiat
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ion 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 np np np np np



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



C. Limiting patient interaction to reduce infection np np np np np



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




Answer: B np



Rationale: ALARA (“As Low As Reasonably Achievable”) ensures patient and
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staff receive the minimum radiation dose necessary for diagnostic-
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quality images. np

,4. A radiologic technologist is preparing to image a patient with a suspecte
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d 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 np np np np np



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




Answer: B np



Rationale: Proper shielding and positioning minimize unnecessary exposure and p
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rotect radiosensitive tissues. Options A, C, and D can increase radiation risk or de
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grade image quality.
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5. Scenario:A 45-year- n
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old patient expresses concern about radiation exposure. How should the techn
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ologist respond? np



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 np np np np



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




Answer: B np



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



Rationale: The American Society of Radiologic Technologists (ASRT) sets educat
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ional and professional standards. FDA regulates equipment, CDC focuses on infectio
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n 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 np



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



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 np



D. Cartilage
Answer: C np



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 np



B. Tube voltage and current
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C. Room temperature np



D. Technologist height np




Answer: B np



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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